diff --git a/demo/package-lock.json b/demo/package-lock.json
index cf581e2..3355647 100644
--- a/demo/package-lock.json
+++ b/demo/package-lock.json
@@ -1694,7 +1694,7 @@
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-          "resolved": "http://registry.npmjs.org/util/-/util-0.10.3.tgz",
+          "resolved": "https://registry.npmjs.org/util/-/util-0.10.3.tgz",
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@@ -1815,7 +1815,7 @@
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-          "resolved": "http://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
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@@ -1880,7 +1880,7 @@
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-          "resolved": "http://registry.npmjs.org/jsesc/-/jsesc-1.3.0.tgz",
+          "resolved": "https://registry.npmjs.org/jsesc/-/jsesc-1.3.0.tgz",
           "integrity": "sha1-RsP+yMGJKxKwgz25vHYiF226s0s="
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@@ -2905,7 +2905,7 @@
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-      "resolved": "http://registry.npmjs.org/clone-deep/-/clone-deep-0.2.4.tgz",
+      "resolved": "https://registry.npmjs.org/clone-deep/-/clone-deep-0.2.4.tgz",
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@@ -3296,7 +3296,7 @@
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-          "resolved": "http://registry.npmjs.org/jsesc/-/jsesc-0.5.0.tgz",
+          "resolved": "https://registry.npmjs.org/jsesc/-/jsesc-0.5.0.tgz",
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@@ -3311,7 +3311,7 @@
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-          "resolved": "http://registry.npmjs.org/regjsgen/-/regjsgen-0.2.0.tgz",
+          "resolved": "https://registry.npmjs.org/regjsgen/-/regjsgen-0.2.0.tgz",
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@@ -3706,7 +3706,7 @@
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-              "resolved": "http://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
+              "resolved": "https://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
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@@ -3895,7 +3895,7 @@
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-          "resolved": "http://registry.npmjs.org/domelementtype/-/domelementtype-1.1.3.tgz",
+          "resolved": "https://registry.npmjs.org/domelementtype/-/domelementtype-1.1.3.tgz",
           "integrity": "sha1-vSh3PiZCiBrsUVRJJCmcXNgiGFs="
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@@ -4318,7 +4318,7 @@
         },
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-          "resolved": "http://registry.npmjs.org/doctrine/-/doctrine-1.5.0.tgz",
+          "resolved": "https://registry.npmjs.org/doctrine/-/doctrine-1.5.0.tgz",
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@@ -5037,7 +5037,7 @@
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-          "resolved": "http://registry.npmjs.org/core-js/-/core-js-1.2.7.tgz",
+          "resolved": "https://registry.npmjs.org/core-js/-/core-js-1.2.7.tgz",
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@@ -5593,7 +5593,8 @@
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+          "bundled": true,
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@@ -5611,11 +5612,13 @@
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+          "bundled": true,
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@@ -5628,15 +5631,18 @@
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+          "bundled": true,
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+          "bundled": true,
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+          "bundled": true,
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@@ -5739,7 +5745,8 @@
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         "inherits": {
           "version": "2.0.3",
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+          "bundled": true,
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@@ -5749,6 +5756,7 @@
         "is-fullwidth-code-point": {
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           "bundled": true,
+          "optional": true,
           "requires": {
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           }
@@ -5761,17 +5769,20 @@
         "minimatch": {
           "version": "3.0.4",
           "bundled": true,
+          "optional": true,
           "requires": {
             "brace-expansion": "^1.1.7"
           }
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         "minimist": {
           "version": "0.0.8",
-          "bundled": true
+          "bundled": true,
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@@ -5788,6 +5799,7 @@
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           "requires": {
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@@ -5860,7 +5872,8 @@
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+          "bundled": true,
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@@ -5870,6 +5883,7 @@
         "once": {
           "version": "1.4.0",
           "bundled": true,
+          "optional": true,
           "requires": {
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@@ -5945,7 +5959,8 @@
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         "safe-buffer": {
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+          "bundled": true,
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@@ -5975,6 +5990,7 @@
         "string-width": {
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@@ -5992,6 +6008,7 @@
         "strip-ansi": {
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           "bundled": true,
+          "optional": true,
           "requires": {
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@@ -6030,11 +6047,13 @@
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         "wrappy": {
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+          "bundled": true,
+          "optional": true
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         "yallist": {
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+          "bundled": true,
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@@ -6244,16 +6263,22 @@
       "integrity": "sha1-/Xqtcmvxpf0W38KbL3pmAdJxOcQ="
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-      "resolved": "https://registry.npmjs.org/handlebars/-/handlebars-4.0.12.tgz",
-      "integrity": "sha512-RhmTekP+FZL+XNhwS1Wf+bTTZpdLougwt5pcgA1tuz6Jcx0fpH/7z0qd71RKnZHBCxIRBHfBOnio4gViPemNzA==",
+      "version": "4.7.7",
+      "resolved": "https://registry.npmjs.org/handlebars/-/handlebars-4.7.7.tgz",
+      "integrity": "sha512-aAcXm5OAfE/8IXkcZvCepKU3VzW1/39Fb5ZuqMtgI/hT8X2YgoMvBY5dLhq/cpOvw7Lk1nK/UF71aLG/ZnVYRA==",
       "requires": {
-        "async": "^2.5.0",
-        "optimist": "^0.6.1",
+        "minimist": "^1.2.5",
+        "neo-async": "^2.6.0",
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-        "uglify-js": "^3.1.4"
+        "uglify-js": "^3.1.4",
+        "wordwrap": "^1.0.0"
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+          "resolved": "http://registry.npmjs.org/minimist/-/minimist-1.2.5.tgz",
+          "integrity": "sha512-FM9nNUYrRBAELZQT3xeZQ7fmMOBg6nWNmJKTcgsJeaLstP/UODVpGsr5OhXhhXg6f+qtJ8uiZ+PUxkDWcgIXLw=="
+        },
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@@ -9132,22 +9157,6 @@
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-      "integrity": "sha1-2j6nRob6IaGaERwybpDrFaAZZoY=",
-      "requires": {
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@@ -9388,7 +9397,7 @@
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-      "resolved": "http://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
+      "resolved": "https://registry.npmjs.org/pify/-/pify-2.3.0.tgz",
       "integrity": "sha1-7RQaasBDqEnqWISY59yosVMw6Qw="
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@@ -9452,7 +9461,7 @@
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-          "resolved": "http://registry.npmjs.org/async/-/async-1.5.2.tgz",
+          "resolved": "https://registry.npmjs.org/async/-/async-1.5.2.tgz",
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@@ -12079,7 +12088,7 @@
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         "jsesc": {
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-          "resolved": "http://registry.npmjs.org/jsesc/-/jsesc-0.5.0.tgz",
+          "resolved": "https://registry.npmjs.org/jsesc/-/jsesc-0.5.0.tgz",
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@@ -12108,7 +12117,7 @@
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-          "resolved": "http://registry.npmjs.org/css-select/-/css-select-1.2.0.tgz",
+          "resolved": "https://registry.npmjs.org/css-select/-/css-select-1.2.0.tgz",
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@@ -12896,7 +12905,7 @@
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-          "resolved": "http://registry.npmjs.org/kind-of/-/kind-of-2.0.1.tgz",
+          "resolved": "https://registry.npmjs.org/kind-of/-/kind-of-2.0.1.tgz",
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@@ -13427,7 +13436,7 @@
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-      "resolved": "http://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
+      "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
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@@ -13933,7 +13942,7 @@
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-          "resolved": "http://registry.npmjs.org/cacache/-/cacache-10.0.4.tgz",
+          "resolved": "https://registry.npmjs.org/cacache/-/cacache-10.0.4.tgz",
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@@ -15212,7 +15221,7 @@
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-      "resolved": "http://registry.npmjs.org/yargs/-/yargs-11.1.0.tgz",
+      "resolved": "https://registry.npmjs.org/yargs/-/yargs-11.1.0.tgz",
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