Add src_alt to .gitignore

  * place code here to override the default src/ when testing

Signed-off-by: Aram Price <aprice@pivotallabs.com>
Cleanup Gemfile bosh_cli is now in rubygems

Signed-off-by: Aram Price <aprice@pivotallabs.com>
Merge git://github.com/cloudfoundry/cf-release