Cleaning up a bit

- updated readme to have this: [![build status](https://travis-ci.org/BristolTopGroup/DailyPythonScripts.png)](https://travis-ci.org/BristolTopGroup/DailyPythonScripts)
- updated the recipe
- matplotlib version 1.3.1 is specifically used as a stable one
- the issue with freetype2 (matplotlib dependency) not being found in CMSSW fixed by manually installing freetype on soolin (thanks @kreczko)