Modified ci enviroments settings.

inspire of https://github.com/CocoaPods/cocoapods-try
Modified pass rubocop

----

but 2 offeneses detected. sorry

lib/pod/command/browse.rb:57:7: C: Cyclomatic complexity for specs_with_name is too high. [7/6]
      def specs_with_name(name)
      ^^^
lib/pod/command/browse.rb:57:7: C: Method has too many lines. [30/18]
      def specs_with_name(name)
      ^^^
Added code climate settings
Modifed to pass travis
Merge pull request #8 from dealforest/topic/travis_and_rubocop

rubocop と travis の対応