Fix minor typo in readme.
Merge pull request #120 from joshnesbitt/patch-1

Fix minor typo in README
fix bad test
Merge pull request #122 from 201-created/cf/fix-bad-test

fix bad test
Added RSVP.async to schedule callbacks on internal queue
Merge pull request #125 from machty/rsvp-async

Added RSVP.async to schedule callbacks on internal queue