some upgrade stuff related to package control and last run - whatever
added in the GitGutter package for seeing diff status in the gutter

* https://github.com/jisaacks/GitGutter
added my own adaption of the Twilight color scheme

This is due to a previous commit where I bring in GitGutter
(c79535ced92b39aa25c4aefdc2061c57df94d982).  Twilight doesn't
handle some of GitGutter's color settings well, so I am going
to need to modify it.

This version is a direct copy from the default color schemes.
I'll do my changes in the next commit.
modified my Twilight adaptation to better suite GitGutter

I didn't like how default Twilight handled some of GitGutter's color
choices so I had to add in some settings.
switching to 10.0 font size

Been using it for a week or so, so I am going to get it committed.
Not sure if it will stick - it still seems really small.  I do like
getting to see more code at a glance though.
Updating some Ruby settings and adding some shell script settings

The ruby additions are so Rakefile and Vagrantfile are recognized
as ruby.

The shell settings are just b/c I'm doing enough shell scripting
to want some default settings.