   #
   renderTimer: =>
     @ui.timer.text @model.get('timer')
+
+  renderPlayButton: =>
+    @ui.start.text if @running then '\uF04C' else '\uF04B'

  initialize: ->
    @model.set timer: @model.get('duration')
    @listenTo @model, 'change:timer', @renderTimer

  # Starts a timer with the value stored in the model.
  #
  # @param [jQuery.Event] event the click event
  #

    if @running
      clearInterval @running
      delete @running
      @model.set 'running', false
    else
      @running = setInterval @tick, 1000
      @model.set 'running', true

  # Start editing the name of the timelet.
  #
