Updated functionality for Issue #9:
 - coded the Format button functionality; however, since it uses the onAutoFormatChange() function, the $scope.myJSON value isn't being changed currently. Thus, as far as the minifyJSON method is concerned, all of the spaces have been removed. The editor, however, does not alter.

 Won will be looking into the onAutoFormatChange() function so I will start working on the aesthetics of the buttons (e.g. moving them up even with the check boxes, etc).