Fix starting DJ
Fix starting DJ

'bundle exec' is run under a login shell so that rvm is setup properly.
Otherwise bundle will look in the system gems and thats not where
'bundle install' was run.

square/rubygems.org,1337807/rubygems.org,rubygems/rubygems.org-backup,1337807/rubygems.org,rubygems/rubygems.org-backup,rubygems/rubygems.org-backup,square/rubygems.org,1337807/rubygems.org,square/rubygems.org