lingfennan-github_api (rubygems):  Ruby client that supports all of the GitHub API methods. It's build in a modular way, that is, you can either instantiate the whole api wrapper Github.new or use parts of it e.i. Github::Client::Repos.new if working solely with repositories is your main concern. Intuitive query methods allow you easily call API endpoints. 
Keywords: api-client|api-navigation|api-wrapper|github-api|modular|ruby-gem