`this` referred to the board here from scope creep. If you ran this code before this patch, it would error out. So, quick change to ensure that we're referring to the correct thing.
Merge branch 'master' of https://github.com/carldanley/johnny-five

* 'master' of https://github.com/carldanley/johnny-five:
  `this` referred to the board here from scope creep. If you ran this code before this patch, it would error out. So, quick change to ensure that we're referring to the correct thing.