use octokit 3.4.0
don't hardcode the octokit version in tests
upgrade warden-github to handle gravatar url deprecation
Merge pull request #89 from ZeroFucks/upgrade-gems

Upgrade gems
change heroku deploy button to svg version
Merge pull request #90 from bgentry/heroku-button-sv

change heroku deploy button to svg version
Read deployment task name from correct place

Fixes #91.
Merge pull request #92 from flowdock/task-data

Read deployment task name from correct place
Add BRANCH env to bundler_capistrano deploy
Validate ref in capistrano deployments
Provide BRANCH env to capistrano through child processes's env.
Move ref validation to default_provider
Merge pull request #93 from flowdock/bundler-capistrano-cap3-support

Cap3 support for bundler_capistrano
fixup rubocop warnings from an older pr
fixup enterprise support which doesn't have the new apis yet
Merge pull request #94 from ZeroFucks/fixup-legacy-enterprise-releases

Fixup legacy enterprise releases