Make __delete_me__ into a func
Provide a nicer error message when panics happen
Use exit status 2 like a good developer
Merge branch 'master' into panics

Conflicts:
	about_channels.go
	about_concurrency.go
	about_panics.go
	setup_koans_test.go
Merge pull request #6 from lenary/panics

Show Panics Nicely