Reflects current changes to layman

version.py: Updates version to 2.2.0-git.
CHANGES: Lists changes made for newest release.
layman.8.txt: Updates man pages.
layman.cfg: Adds new config options for newest release.
Merge pull request #24 from twitch153/new_release

Reflects current changes for new layman release:
- version.py: Updates version to 2.2.0-git.
- CHANGES: Lists changes made for newest release.
- layman.8.txt: Updates man pages.
- layman.cfg: Adds new config options for newest release.