sxross/MotionModel — pull request #28 by ddrscott (2013-03-28 15:52:10+00:00)
Title: expose a reader method to @data

I needed this to iterate through all the columns so I could generate JSON. I think this is easier to use the iterating through `columns` and calling `send`. This is similar to ActiveRecord's `attributes` method. I was tempted to call the accessor `attributes` but noticed you called the internal ivar `@data` so I stuck with it.