You can clone with
HTTPS or Subversion.
It would be nice to have some command like:
$ git flow feature clean
That would search in the git log for branches that have been merged and have no commit ahead, then remove them from local and remotes
I'm using a lot of features, and sometimes I'll use the github pull request feature to merge them upstream, and rebase my local repo instead of finishing the feature. Therefore, I'm quickly having a lot of features that I need to remove manually.