chore(package): update browserify to version 16.4.0

Closes #66

Author: greenkeeper[bot]

package.json

@@ -33,7 +33,7 @@
     "babel-preset-es2015": "^6.6.0",
     "babel-register": "^6.7.2",
     "babelify": "^10.0.0",
-    "browserify": "^11.2.0",
+    "browserify": "^16.4.0",
     "coveralls": "^2.11.9",
     "deglobalify": "^0.2.0",
     "es6ify": "^1.6.0",