Gemcutter & Jeweler
More about gemcutter & jeweler can be found here.
Here are the steps how to publish patched gem cloned from github:
1. Append username to gem name in .gemspec or if you use jeweler open Rakefile and edit Jeweler::Tasks section save it and run:
rake gemspec
2. Build gem with:
gem build
3. Push new gem to gemcutter
gem push