code: function() {
              if (needsSpacer) {
                  this.$pinny.find(FOCUSABLE_INPUT_ELEMENTS)
                      .on(events.focus, this._showSpacer.bind(this))
                      .on(events.blur, this._hideSpacer.bind(this));
              }
          }
docs: In iOS7/Android 4 or below, when elements are focused inside pinny
  the keyboard obscures the input. We need to scroll back to
  the element to keep it in view.