Add Debugging With Full Source Maps as a webpack til

webpack/debugging-with-full-source-maps.md

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+# Debugging With Full Source Maps
+
+After Webpack runs your JavaScript through various loaders, it no longer
+looks like the code you were writing in your editor. This can make debugging
+difficult when you inspect the source of an error in the browser's devtools.
+Fortunately, Webpack makes it easy to enhance debugging with full source
+maps of your code. Just add the following option to your Webpack config:
+
+```javascript
+devtool: source-map
+```
+
+This will generate a full source map with a filename that is something like
+`bundle.js.map`.
+
+Note: this will slow down the webpack build process a bit.