Convert markdown to reST for PyPI in setup.py
Use assignment to hide output from garbage collector

This should be easier to read.
Use pip as canonical install command in Travis CI testing
Read README.rst instead of converting it in setup.py

This saves a hell lot of trouble regarding existing modules, executables
and files. Conversion should be done manually, like so:

pandoc README.md -o README.rst

Note: you cannot use reST documents with internal links for PyPI.
Ignore README.rst

This has to be created before using setuptools from README.md
Merge branch 'cosmetics'