docs: Add prominent status badges and links to Travis-CI and documentation
envytools - Tools for people envious of nvidia's blob driver.
+.. image:: https://travis-ci.org/envytools/envytools.svg?branch=master
+ :target: https://travis-ci.org/envytools/envytools
+
+.. image:: https://readthedocs.org/projects/envytools/badge/?version=latest
+ :target: https://envytools.readthedocs.io
+
The canonical repo is at: https://github.com/envytools/envytools/. Pushing
anywhere else will result in a de-facto fork!
