Add -g option to specife an alternate repo URL for git install type.

* Regexp changed to allow dashes in branch names.
Add mint 16 eqiuvalence to Ubuntu 13.10
Merge pull request #276 from nmbooker/mint-16-support

Add mint 16 eqiuvalence to Ubuntu 13.10
Merge pull request #261 from vhgroup/develop

Add -g option to specify an alternate repo URL for git install type.