fixing git credential helper for GitHub Enterprise
Update faq.md
updating github enterprise support for 2fa
Add Ruby 2.0.0 to README

It's provided now.
Merge pull request #433 from jjbohn/patch-1

Add Ruby 2.0.0 to README
Merge pull request #372 from fschwiet/patch-1

Update faq.md based on question
Merge pull request #361 from mdelagralfo/git-credential-fix

fixing git credential helper for GitHub Enterprise
Marge upstream

theMerge branch 'master' of git://github.com/boxen/our-boxen
update