code: function (target, options) {
          options = options || {};
          var animator = new Animator(
              target,
              options.loop,
              options.getter,
              options.setter,
              options.interpolater
          );
          animator.animation = this;
          return animator;
      }
docs: Create an animator
  @param  {Object} target
  @param  {Object} [options]
  @param  {boolean} [options.loop]
  @param  {Function} [options.getter]
  @param  {Function} [options.setter]
  @param  {Function} [options.interpolater]
  @return {clay.animation.Animator}