Automatic build and reload for Sphinx documentation

I'm beginning to use Sphinx to create a document and I got sick of compiling and reloading every time I wanted to see what was going on. So I learned how to get it to automatically compile to html and then reload Firefox. The solution is below.


It's a combination of two useful tidbits.

One introduces Watchdog:
http://jacobian.org/writing/auto-building-sphinx/

The other introduces xvkbd:
http://stackoverflow.com/a/15589391/456878