Bump pyenv repo version
Update python::2_6 to 2.6.9
Update python::2_7 to 2.7.6
Update python::3_3 to 3.3.3
Update python::3_2 to 3.2.5
Add python::3_1 and 3.1.5
Update pyenv-install
Update all the tests
Update comments to match reality
Merge pull request #2 from alphagov/master

Update pyenv and add new versions