Travis-CI: add build-status badge to README.md

* Currently points to anonimal/bitmonero.
  This should be changed to monero-project/bitmonero
  once the project signs-up for Travis-CI.

README.md

@@ -2,6 +2,8 @@
 
 Copyright (c) 2014-2016, The Monero Project
 
+[![Build Status](https://travis-ci.org/anonimal/bitmonero.svg?branch=master)](https://travis-ci.org/anonimal/bitmonero)
+
 ## Development Resources
 
 Web: [getmonero.org](https://getmonero.org)