ssl rietveld support

Hello,

Thank you for writing git-cl. We recently secured our rietveld server on google apps, and I have patched git-cl to support ssl-hosted rietveld instances. Perhaps you could take a look and merge it into your master. FYI, your tree on github is outdated compared to http://neugierig.org/software/git/?url=git-cl/ -- only the last two commits are mine.

Thanks,
Joey