chore(package): update dependencies (#243)

Author: michael-ciniawsky

package.json

@@ -19,13 +19,13 @@
     "schema-utils": "^0.3.0"
   },
   "devDependencies": {
-    "css-loader": "^0.28.1",
+    "css-loader": "^0.28.3",
     "file-loader": "^0.11.1",
     "jsdom": "^9.12.0",
     "memory-fs": "^0.4.1",
-    "mocha": "^3.2.0",
+    "mocha": "^3.4.2",
     "standard-version": "^4.0.0",
-    "webpack": "^2.2.1"
+    "webpack": "^2.6.1"
   },
   "scripts": {
     "test": "mocha",