Add support for Bacon
Add support for working with gems
Add support for always using related

The idea is that if you call  RunRspecRelated on a spec the current buffer
is used otherwise the related spec is searched. This allows to define a chord
which can be used in both cases.
Merge remote-tracking branch 'origin/gem-support'

* origin/gem-support:
  Add support for always using related
  Add support for working with gems
  Add support for Bacon