Starting from jQuery
jQuery: Add support for circle shape
Angular: First attempt at switching to ng

- Note the use of angular.element. We could use $ too since jQuery is
  included.
Angular: Doing things the Angular way

- Use the scope and ngModel directive

- Remove jQuery dependency

Note the dot in the model. This is a best practice! I could've just used "myText" for the model variable.
Use Angular Directive Controller!