Change to use HTTPS

Many places block the "git" port.  Using the much more popular "https" port will work better for coffee shops, hotels and enterprise networks.

I found that this is blocked for me when trying to install Karma.  It would be nice if you can get this change in and publish 0.0.2 to npm's list.  Then I can start using Karma 0.10.0 without getting download errors.