Added check for updates of CSS file to auto

This way, when the user tweaks their local theme, it will get
automatically updated when run with -a
removed binary
Provide live updating of local theme stylesheet
Added check to see if the stylesheet exists so we are not updating blind
Added documentation for the local theme feature added by guidokessels
Merge pull request #14 from kmlawson/master

Added support for --automatic to also check for updates to local theme CSS