Added python::params & fixed $valid_versions def
Merge pull request #130 from gregsaram/pythonParamsClass

Added python::params & fixed $valid_versions def
Release 1.7.12
Update README.md
Return 'absent' instead of nil
Merge pull request #131 from eshamow/fix_virtualenv_version

Return 'absent' instead of nil
code highlight for version number :)