Add a link about branch management in further readings section

README.md

@@ -70,6 +70,7 @@ Please bring your laptop including a Web browser, a text editor, and a recent [G
 - [Flight Rules for Git](https://github.com/k88hudson/git-flight-rules)
 - [First Aid Git](http://firstaidgit.io)
 - [Interactive Git Cheat-Sheet](http://ndpsoftware.com/git-cheatsheet.html)
+- [Martin Fowler: Patterns for Managing Source Code Branches](https://martinfowler.com/articles/branching-patterns.html)
 
 ## Contributors