Merge pull request #47 from tomjelen/patch-1

Add webpack instructions to 'enabling source maps'

Author: schickling

README.md

@@ -153,6 +153,16 @@ yarn add --dev source-map-support
 import 'source-map-support/register'
 ```
 
+If you are using webpack (most likely). Add `devtool: 'source-map'` to `webpack.config.js`:
+```js
+module.exports = {
+  .... snip ....
+  devtool: 'source-map',
+  .... snip ....
+
+}
+```
+
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