fix js build

Author: pavelvlasov

package.json

@@ -1,6 +1,6 @@
 {
   "name": "bluecore-classnames",
-  "version": "0.1.0",
+  "version": "0.1.1",
   "description": "Automatic class builder for React components",
   "keywords": [
     "react",

webpack.config.coffee

@@ -8,6 +8,10 @@ module.exports =
   output:
     path: path.resolve './dist'
     filename: 'index.js'
+    libraryTarget: 'commonjs2'
+
+  externals:
+    'react': 'react'
 
   module:
     loaders: [