Move in Textmate formatter fixes https://github.com/rspec/rspec-tmbundle/issues/49

First pass at fixing https://github.com/rspec/rspec-tmbundle/issues/49.
No tests yet. @jperkins Are you able to run any of the tests under Support/spec/rspec/mate ?
Does it make sense to put it under `RSpec::Mate::Formatters`? It used to be `RSpec::Core::Formatters` .