stefanpenner/ember-app-kit — pull request #154 by joefiorini (2013-09-15 21:01:24+00:00)
Title: Fix arrays of requirements

If I set a requirement for Sass like:

```javascript
var requirements = {
'sass': ['grunt-sass', 'grunt-contrib-sass']
}
```

`isPackageAvailable` will return false if I only have `grunt-contrib-sass` installed, which is the most likely case.