Rspec Retry

Since we're dealing with intermittent failures and retrying code anyway, just retry the whole test if it fails once.


https://github.com/y310/rspec-retry
rev hatchet 0.2.0
Merge pull request #111 from heroku/schneems/rspec-retry

Rspec Retry
Merge pull request #112 from heroku/schneems/rev-hatchet2

rev hatchet 0.2.0
Merge branch 'master' of git://github.com/heroku/heroku-buildpack-ruby