Merge pull request #82 from valdrinkoshi/unobservenodes

add unobserveNodes placeholder

Author: Steve Orvell

src/utils/compat-dom-utils.html

@@ -21,6 +21,8 @@
 
     e.observeNodes = function() {};
 
+    e.unobserveNodes = function() {};
+
     e.deepContains = function(node) {
       if (this.contains(node)) {
         return true;