Merge pull request #1 from kevinhart/master

Update index.html
in-prog: adding themes to dotcom
working impl of theme directive/controller.
fixed code style in themes.js
refactored theme to use a svc instead of a controller.
Working version of theme switch
Added dark theme
Added ability to specify  theme from config.json
fixed bug with template path for themes.
Fixed bad sentence in theme selector.
initial khar theme