cookpad/chanko — pull request #20 by sanemat (2013-01-05 01:19:28+00:00)
Title: Add development dependancy for Ruby 2.0.0

ruby-debug19, ruby-debugger and debugger require ruby header files,
but ruby_core_source and debugger-ruby_core_source does not include
Ruby2.0.0 header files yet, so skip install.