Add Rdoc document for Array#forty_two
Updated Rubinius version to 2.1.1
Added Rubinius 2 specific dependencies.
gemfile entries can be added to the app builder
Merge pull request #12722 from razielgn/update-travis-rbx

Updated Rubinius on Travis to 2.1.1
Merge pull request #12713 from utenmiki/document

Add Rdoc document for Array#forty_two [ci skip]
Warnings removed for ruby trunk

Same as 4d4ff531b8807ee88a3fc46875c7e76f613956fb
Merge pull request #12727 from arunagw/aa-warnings-removed-ruby-trunk

Warnings removed for ruby trunk
Added rubysl-rexml to Rubinius deps.
Merge pull request #12732 from razielgn/additional-rbx-dep

Added rubysl-rexml to Rubinius deps.