Adapt the README and the Pamphlet to the current workflow

* [x] The Hound is no longer used, remove it from the Pamphlet
* [x] Use CodeClimate Coverage instead of Coveralls
* [x] Switch to [Shields.io](http://shields.io) for our badges

**Open Question:**

* Are we still using Waffle? If yes, we should add it to the pamphlet. If no, we should remove the badge.