Finish building mario from blocks.

  * Separate mario blocks array into separate js file
  * finish populating array with mario blocks
  * move camera back for better view
  * still to come: now camera tracking is slow and choppy -- must fix

![It turns out I left nannying only to continue playing with building blocks](http://media1.giphy.com/media/SHW33WlnakMk8/200.gif)