Fixed broken getScrollableEl() method.

index.js

@@ -105,7 +105,31 @@
 		 * @return {jQuery}
 		 */
 		ScrollableNative.prototype.getScrollableEl = function () {
-			return this._query(this.getSettings().selectors.scrollableEl);
+
+			var selector;
+
+			if(typeof this._scrollable === 'undefined') {
+
+				selector = this.getSettings().selectors.scrollableEl;
+
+				if(typeof selector === 'undefined') {
+
+					// defaults to getEl()
+					this._scrollable = this.getEl();
+
+				}else if(typeof selector === 'string') {
+
+					// selector
+					this._scrollable = this._query(selector);
+				}else {
+
+					// jQuery object
+					this._scrollable = selector;
+				}
+
+			}
+
+			return this._scrollable;
 		};