Rakefile

# Once you've included your Jeweler tasks and your Jeweler::Gemcutter tasks...

namespace :release do
  %w(patch minor major).each do |level|
    desc "Tag a #{level} version and push it to Gemcutter."
    task level.to_sym => ["version:bump:#{level}", "release", "gemcutter:release"]
  end
end

# Now, to tag a new version, push it to GitHub and release your project on Gemcutter, you just have to do:

# $ rake release:(patch|minor|major)