Detailed instructions for Babel presets

Include an example of specifying babel presets from within the webpack configuration, since it's not obvious how to do this if you're not using a separate babel config. Linked to babelrc doc and 'Setting up Babel 6' article since the syntax shown in the previously linked article for including query parameters doesn't work in this case as there are multiple loaders used.

Author: cathylill

README.md

@@ -89,9 +89,18 @@ As of `babel@6.0` you must specify your
 [`presets`](http://babeljs.io/docs/plugins/#presets) to get this to work with
 `React`.
 
-See [Quick guide: how to update Babel 5.x ->
-6.x](https://medium.com/@malyw/how-to-update-babel-5-x-6-x-d828c230ec53#.3z99fxfmq)
-for more details.
+Presets can be specified as part of a [Babel config](https://babeljs.io/docs/usage/babelrc/) as outlined in [Setting up Babel 6](https://babeljs.io/blog/2015/10/31/setting-up-babel-6), or you may specify Babel presets for your loader within your webpack configuration:
+
+~~~js
+// file: webpack.config.js
+module.exports = {
+    
+    loaders: [
+        { test: /\.svg$/, loader: 'babel?presets[]=es2015,presets[]=react!svg-react' }
+    ],
+
+}
+~~~
 
 
 ### React Before Version 0.14.0