Fix bug in Sauce Labs handler
Update travis-build

Pulls in Bundler-before-CocoaPods change for Objective C builds.
Use public IP for vm_ready?
Port BlueBox changes to Sauce Labs connector
Unlock the keychain for OS X builds
Update travis-build to get xctool
capture bluebox api errors in more places

and use api.error instead of api.boot
Merge branch 'master' of https://github.com/travis-ci/travis-worker
Merge branch 'master' into bluebox-production-com