Use `shell-quote-argument` instead of `ag/shell-quote`.
Merge pull request #22 from knu/shell-quote

Use `shell-quote-argument` instead of `ag/shell-quote`.
Remove the now-unused ag/s-replace
Version bump
Define faces as faces, not var aliases

This allows proper use of `M-x customize-face`, and places the faces logically within the custom group.
Merge pull request #23 from purcell/patch-3

Define faces as faces, not var aliases
version bump following previous commit
just point to the readme for documentation