Fixed bug when --set isn't provided.

>    director = Director(generate_coverage=args.coverage, charmaps=args.set.split(','))
fail because args.set is None
Fixed setup and version bump

Spent about 8 hours to compile and install deps, Only numpy takes 2
hours to compile :goberserk:
Merge pull request #15 from xen/master

Bump to 1.0.8