Added .travis.yml for github integrated CI of different ruby versions
Added .travis.yml for github integrated CI of different ruby versions

thoughtworks/cruisecontrol.rb,shopittome/cruisecontrol.rb,shopittome/cruisecontrol.rb,thoughtworks/cruisecontrol.rb,shopittome/cruisecontrol.rb,thoughtworks/cruisecontrol.rb,thoughtworks/cruisecontrol.rb,shopittome/cruisecontrol.rb,thoughtworks/cruisecontrol.rb,shopittome/cruisecontrol.rb,shopittome/cruisecontrol.rb