You can clone with
HTTPS or Subversion.
Just intalled this to play around and everything seems to be working except the themes. It even imported my data, but still no themes show in the dropdown. I confirmed the files are in the correct place. Any help would be appreciated!
It's a shame you only just noticed - I've just moved home so I'm stuck on my iPhone as a sole connection to the web for a few weeks! I'll see if I can figure out what's wrong from here but it may be a while before I have a fix for you, sorry!
If you could post a breakdown of your environment here it'd be handy - windows? Ruby version? List of installed gems? Thanks!
What seems to be happening is that Thimblr is not creating the themes directory under ~/Library/Application Support/Thimblr and simply placing the themes in that directory.
Quick fix for jbrewer: Create themes dir in the aforementioned path and move the .html files into there.