chore(package): update stylelint to version 13.2.0

Closes #9

Author: greenkeeper[bot]

package.json

@@ -19,7 +19,7 @@
     "@babel/core": "^7.0.0-beta.32",
     "babel-preset-env": "^1.6.1",
     "jest": "^21.2.1",
-    "stylelint": "^8.2.0"
+    "stylelint": "^13.2.0"
   },
   "peerDependencies": {
     "stylelint": "^8.2.0"