dockyard/ember-cli-async-button — pull request #20 by ernesto-jimenez (2014-10-15 23:10:05+00:00)
Title: Fix race condition when button removed before bound promise finishes

I found a race condition when using ```async-button``` with a bound promise inside an if statement that turns false after promise has been assigned to the component and before the promise is resolved.

This PR fixes it.

It also includes a refactoring of one of the tests and tests from async-button using a bound promise.