Make gh browse compatible.

Speeding up Travis CI builds by caching gems

Add command to create issues.

http://mislav.uniqpath.com/2013/12/travis-cached-bundle/

Fix typo in git show format

It's possible that comments are multiple lines

Minor refactoring to Command.subCommandsUsage

For each loop handles nil array. Refactor local var key to usage to be more explicit.

* master:
  Fix help for releases

Fix help for releases

Subcommands.

* master:
  Prevent octokit abstraction from leaking by introducing ClientError
  Use halt for assert_basic_auth
  Give up the last test since it's not related
  Change expectation of the cucumber tests cause it doesn't make sense
  Get 2fa cucumber tests going
  Allow GITHUB_USER and GITHUB_PASSWORD env var
  Use URL from Authorization.App
  Fix completion path
  Change completion script to be executable
  Add update command to the completion list.
  Update completion scripts.

Conflicts:
	Godeps/Godeps.json

Make more authorization cucumber tests passing

Update completion scripts.

Because this PR is not about that.

So we can use flags before and after arguments, and we can group boolean flags, just like git does.