Fix run_rspec to work with recent TextMate versions.
Fix run_rspec to work with recent TextMate versions.

Working directory is no longer the project directory, so we have to set it ourselves.

rspec/rspec.tmbundle,infininight/rspec-tmbundle,die-antwort/rspec-tmbundle,rspec/rspec.tmbundle,die-antwort/rspec-tmbundle,infininight/rspec-tmbundle