Updated gitignore to exclude Cmake stuff.
Update Cmake config to correctly build on Mavericks; includes newer compute arches as well.
Updated Readme with Mavericks-specific instructions.
Updated Readme with Mavericks-specific instructions.
Merge branch 'master' of github.com:cpowell/cs344

Conflicts:
	README.md
Merge pull request #15 from cpowell/master

Mavericks compatibility (doco, Cmake, etc.)