Updates .gitignore, styling for docs

- Adds .map files to .gitignore for compiled css files
- Updates styling of docs template
- Adds modified line to footer
Updates docs compilation

- Adds grunt-shell
- Updates docs compilation so now can be done completely with `grunt docs`
Adds fs mixin

Adds shorthand fs() mixin for typecsset-font-size()
Updates to docs templates and styles

- Adds docs classes to heading, p, and code tags to be styled by docs css and not the site css
- Simplifies docs sass code
- Adds droid sans mono for code font