Merge pull request #913 from mozilla/greenkeeper-postcss-loader-0.10.0

Update postcss-loader to version 0.10.0 🚀

Author: muffinresearch

package.json

@@ -212,7 +212,7 @@
     "mocha": "3.0.2",
     "node-sass": "3.8.0",
     "po2json": "0.4.2",
-    "postcss-loader": "0.9.1",
+    "postcss-loader": "0.10.0",
     "react-addons-test-utils": "15.3.0",
     "react-dom": "15.3.0",
     "react-hot-loader": "1.3.0",