Remove explicit requirement installation

Leave it up to setuptools to do its job
Hardcoded package version in setup.py

This avoid having to import the mpltools in order to get the version, which in turn avoids having to have configobj installed before setuptools knows that mpltools depends on configobj.
Merge branch 'travis-ci' of github.com:marcusps/mpltools into travis-ci

Conflicts:
	.travis.yml
Merge branch 'master' of github.com:marcusps/mpltools

ge is necessary,