Dom changed event.

Updated docs.

README.md

@@ -332,6 +332,10 @@ The number of pixels the content width can surpass the container width without e
 The number of pixels the content height can surpass the container height without enabling the Y axis scroll bar. Allows some "wiggle room" or "offset break", so that Y axis scroll bar is not enabled just because of a few pixels.
 **Default**: `0`
 
+### autoupdate
+When set to true, the scroll will be updated when an element is added or removed from the content.
+**Default**: `true`
+
 ### theme
 A string. It's a class name added to the container element. The class name is prepended with `ps-theme-`. So default theme class name is `ps-theme-default`. In order to create custom themes with scss use `ps-container($theme)` mixin, where `$theme` is a scss map.
 **Default**: `'default'`
@@ -396,6 +400,9 @@ This event fires when scrolling reaches the start of the x-axis.
 ### ps-x-reach-end
 This event fires when scrolling reaches the end of the x-axis.
 
+### ps-dom-change
+This event fires when dom elements have been added to or removed from the content.
+
 You can listen to these events either with vanilla JavaScript
 ```javascript
 document.addEventListener('ps-scroll-x', function () {

src/js/plugin/autoupdate.js

@@ -4,6 +4,12 @@ var update = require('./update');
 var MutationObserver = window.MutationObserver;
 var instances = require('./instances');
 
+var createDOMEvent = function (name) {
+  var event = document.createEvent('Event');
+  event.initEvent(name, true, true);
+  return event;
+};
+
 module.exports = function (element) {
   if (MutationObserver === null || MutationObserver === undefined) {
     // MutationObserver is not supported
@@ -13,6 +19,7 @@ module.exports = function (element) {
   var i = instances.get(element);
   var onMutationObserver = function () {
     update(element);
+    element.dispatchEvent(createDOMEvent('ps-dom-change'));
   };
 
   i.observer = new MutationObserver(onMutationObserver);