Ignore the .bundle directory
Update to github-pages 12
Use RubyGems version 2.1.11

See orgsync/active_interaction@5e66de7> for reasoning.
Require Vagrant 1.4.2
Update to Ruby 2.1.0p0
Update RubyGems and remove Bundler

See 5b84829c0c34ebaad9d01a554434c83241fc8f1a.