use es7.js extension

Author: yyx990803

example/example.es renamed to example/example.es7.js

@@ -1,12 +1,12 @@
 module.exports = {
-  entry: './example/example.es',
+  entry: './example/example.es7.js',
   output: {
     path: './example',
     filename: 'build.js'
   },
   module: {
     loaders: [
-      { test: /\.es$/, loader: 'babel?stage=0' }
+      { test: /\.es7\.js$/, loader: 'babel?stage=0' }
     ]
   }
 }

example/webpack.config.js

@@ -6,7 +6,7 @@ module.exports = {
   },
   module: {
     loaders: [
-      { test: /\.es$/, loader: 'babel?stage=0' }
+      { test: /\.es7.js$/, loader: 'babel?stage=0' }
     ]
   }
 }