First pass at castle generator task.
Implemented update action for castle
Changed update to pull to match git commands
Add note to readme re. github and symlink
Merge remote branch 'Sutto/master'
Fix listing of github-style cloned repos.
Added link to rip in readme.
Version bump to 0.5.0.
Regenerated gemspec for version 0.4.1
Actually bump.
Regenerated gemspec for version 0.5.1
Added minimal thor version.
Version bump to 0.5.2.
Regenerated gemspec for version 0.5.2
Add source to Gemfile so bundler works
Don't try to clone uri's without a corresponding destination

The code throws the exception

  undefined method `join' for nil:NilClass

if destionation doesn't exist - so it's better to not call git_clone if
destination is not present.
Handle cloning of uri's based on ssh aliases like host:repos
Merge remote branch 'jacobat/bundler-src'
Updates for latest bundler/jeweler.
Version bump to 0.5.3.