Grid Fixes

- Added push and pull types to grid.

- Fixed a bug with eleven-based grid items.

- Changed generated column classes to underscore-based naming scheme.
Example classes changed

- Changed example classes to underscore-based naming.

- Added underscores to index.kit/.html
Added type color

- Type color added to colors map.

- Type color added to body and p tags by default.
New functions

- Added documentation.

- Baseline calculation broken out into its own function.

- type-font-size mixin now delegates baseline calculation out.

- Type map added to variables. You can now reference the values of type
sizes using type(font-size,value).

- typography.scss now indexes its values in type map.
Responsive tables bug fix.

-Removed erroneous colons showing up in tables without headers once
they're shrunk.
Sanitized spacing extends

- Shrunk the number of padding/spacing extend to places where it makes
the most sense.
Prepros and Codekit config updates
Summation of fixes