andi/simple-navigation — pull request #131 by ramontayag (2013-06-07 15:01:07+00:00)
Title: Relax hash constraint

I was creating my items like so:

```ruby
DynamicItem < Hash
def initialize(blah)
self[:key] = blah.get_key
end
end
```

And SimpleNavigation was erroring out. This allows kinds of hash to work, not necessarily just instances of Hash.