Added onScrollEnd hook

.gitignore

@@ -1 +1,2 @@
-node_modules
+node_modules
+bower_components

demo/index.html

@@ -97,8 +97,16 @@ <h2>Horizontal scroller</h2>
   <script>
   $(document).ready(function() {
     // Initialize scrollers.
-    $('.demo1').TrackpadScrollEmulator();
-    $('.demo2').TrackpadScrollEmulator();
+    $('.demo1').TrackpadScrollEmulator({
+      onScrollEnd: function() {
+        alert('at the end');
+      }
+    });
+    $('.demo2').TrackpadScrollEmulator({
+      onScrollEnd: function() {
+        alert('at the end');
+      }
+    });
     // Demonstration of changing the vertical scroller content and dimensions.
     $('.add-more').on('click', function(e){
       e.preventDefault();

jquery.trackpad-scroll-emulator.js

@@ -139,6 +139,18 @@
      */
     function onScrolled(e) {
       flashScrollbar();
+      checkScrollEnd();
+    }
+
+    function checkScrollEnd() {
+      var contentSize = sizeAttr === 'height' ? $contentEl.outerHeight() : $contentEl.outerWidth();
+      var scrollOffset = $scrollContentEl[scrollOffsetAttr](); // Either scrollTop() or scrollLeft().
+      var scrollbarSize = $scrollbarEl[sizeAttr]();
+
+      var endReached = scrollOffset + scrollbarSize + options.scrollBuffer >= contentSize;
+      if (endReached) {
+        hook('onScrollEnd');
+      }
     }
 
     /**
@@ -322,6 +334,8 @@
   $.fn[pluginName].defaults = {
     onInit: function() {},
     onDestroy: function() {},
+    onScrollEnd: function() {},
+    scrollBuffer: 50,
     wrapContent: true,
     autoHide: true
   };