fixed url-loader dependency to updated version with master

Author: sethbergman

package.json

@@ -86,7 +86,7 @@
     "stylelint": "^9.1.3",
     "stylelint-config-standard": "^18.2.0",
     "sw-precache-webpack-plugin": "0.9.1",
-    "url-loader": "0.5.7",
+    "url-loader": "1.0.1",
     "webpack": "^3.8.1",
     "webpack-dev-server": "^2.9.1",
     "webpack-manifest-plugin": "^1.3.2",