fix erb comment highlighting

demo/kitchen-sink/docs/html_ruby.erb

@@ -11,6 +11,7 @@
  
 <% @books.each do |book| %>
   <tr>
+    <%# comment %>
     <td><%= book.title %></td>
     <td><%= book.content %></td>
     <td><%= link_to 'Show', book %></td>

lib/ace/mode/_test/tokens_html_ruby.json

@@ -96,6 +96,12 @@
   ["meta.tag.punctuation.begin","<"],
   ["meta.tag.name.table","tr"],
   ["meta.tag.punctuation.end",">"]
+],[
+   "start",
+  ["text","    "],
+  ["comment.start.erb","<%#"],
+  ["comment"," comment "],
+  ["comment.end.erb","%>"]
 ],[
    "start",
   ["text","    "],

lib/ace/mode/html_ruby_highlight_rules.js

@@ -45,7 +45,12 @@ define(function(require, exports, module) {
             }, {
                 token : "comment.start.erb",
                 regex : "<%#",
-                push  : [{regex: "%>", next: "pop"}]
+                push  : [{
+                    token : "comment.end.erb",
+                    regex: "%>",
+                    next: "pop",
+                    defaultToken:"comment"
+                }]
             }, {
                 token : "support.ruby_tag",
                 regex : "<%+(?!>)[-=]?",