Alright, my pull request has been accepted. If you download the latest Windows Installer (must be the Installer, it can't be the Standalone or Portable version) it will set the URI handler for "bitcoin:" to Electrum (and override the previous URI handler if it exists). 
If you use Google Chrome and just installed Electrum you might need to restart the browser/your computer.
If you use Google Chrome and just installed Electrum you might need to restart the browser/your computer.
Nice! Thanks!!
The good news is that it works great with Firefox! Yay! The bad news is that it doesn't work with Chrome. I've tried restarting Chrome and clicking on Shorena's test link and it does nothing.