chore(package): update style-loader to version 0.20.2

Closes #35

Author: greenkeeper[bot]

package.json

@@ -45,7 +45,7 @@
     "prettier": "1.7.4",
     "react-styleguidist": "6.0.31",
     "react-test-renderer": "16.0.0",
-    "style-loader": "0.19.0"
+    "style-loader": "0.20.2"
   },
   "bundlesize": [
     {