add async support
post-async cleanup
Add moonscript and traceback rewriting support to busted.
moonscript support
Update README.md

hide travis build until we've fixed it. I ran it locally, I promise it works >>
Merge branch 'master' of git://github.com/Olivine-Labs/busted

Conflicts:
	src/core.lua
fix moonscript traces
moonscript spec cleanup
Merge branch 'master' of git://github.com/Olivine-Labs/busted
Fix traceback rewriting for moonscript.