Add link to `awesome-electron`

README.md

@@ -43,3 +43,5 @@ contains documents describing how to build and contribute to Electron.
 
 There is an [`electron` category on the Atom forums](http://discuss.atom.io/category/electron)
 as well as an `#atom-shell` channel on Freenode.
+
+Check out [awesome-electron](https://github.com/sindresorhus/awesome-electron) for a community maintained list of useful example apps, tools and resources.