Add support for PyPy 2.3.1
Add support for CPython 2.7.7
Revert "Don't create unnecessary symlinks"

This reverts commit 679ccb97b91a2cb7d1e67d3189d5802412718a5e.
Fixed creating bin/python symlink
Added locate command

It prints out the path to the selected python version:

pythonz locate 2.7.7

Closes #11
Updated README
Style
Update bash completion script for new commands
Dev branch should always have 'dev' as version
Merge branch 'dev'

Conflicts:
	pythonz/version.py