Vim: Stop colorsetter from being a nosync bundle

This removes my need to have a nosync option for vundle bundles, and
allows me to use vundle's master branch in all my boxes.
Install: Use vundle's master branch in installer

Stop using the events branch in new installations, as it is massively
out of date.
Vim: add syntax for Awk embedded in shell scripts

As explained in :he sh-awk
Vim: Rearrange / cleanup / update vim bundles
Vim: Use github colorscheme for diffs