function attach (scope, element, options) {
        if (isDisabledGlobally || element.controller('mdNoInk')) return angular.noop;
        return $injector.instantiate(InkRippleCtrl, {
          $scope:        scope,
          $element:      element,
          rippleOptions: options
        });
      }
@ngdoc method
@name $mdInkRipple#attach

@description
Attaching given scope, element and options to inkRipple controller

@param {object=} scope Scope within the current context
@param {object=} element The element the ripple effect should be applied to
@param {object=} options (Optional) Configuration options to override the defaultRipple configuration
* `center` -  Whether the ripple should start from the center of the container element
* `dimBackground` - Whether the background should be dimmed with the ripple color
* `colorElement` - The element the ripple should take its color from, defined by css property `color`
* `fitRipple` - Whether the ripple should fill the element