sxross/MotionModel — pull request #60 by tacticiankerala (2013-06-25 15:34:58+00:00)
Title: JSON array parsed using bubble wrap is not converted into proper array by cast_to_array

example:
```ruby
parsed_json = BW::JSON.parse('{"menu_categories":["Lunch"]}')
Array(parsed_json)
# returns ["Lunch", nil, nil]
```

I am not quite sure why this problem exists. But I have managed to add a failing spec and temporary fix for this issue.