Merge pull request #214 from foglerek/master

Accomodated for change to Loader API in Webpack 2

lib/loader.js

@@ -9,7 +9,8 @@ module.exports = function (source) {
     this.cacheable();
   }
   var allLoadersButThisOne = this.loaders.filter(function (loader) {
-    return loader.module !== module.exports;
+    // Loader API changed from `loader.module` to `loader.normal` in Webpack 2.
+    return (loader.module || loader.normal) !== module.exports;
   });
   // This loader shouldn't kick in if there is any other loader
   if (allLoadersButThisOne.length > 0) {