Workaround DCC

Currently, Tilo has no time to fix DCC. Although he compiled a new Ruby 1.8.7 version p374, DCC itself requires p357 which is broken at the moment (bundle gives error messages). And since all project tmp dirs are subdirs of DCC, they inherit the broken Ruby version.

This workaround specifies the Ruby version in .rbenv-version, even though the gem works on several Ruby versions.