converted callback hell to pretty async calls
shorthanded many async calls

removed some needless code by passing all errs directory to the callback
(instead of an anon function) in the case the callback only tested for
err anyway (and did no other functions)
removed bool retval from mc.create

shorthanded more callbacks
removed bool retval from mc.delete and mc.kill
Merge pull request #7 from hexparrot/fix_callbacks

Fix callbacks