Add htmlembedded.js to compression helper

Author: marijnh

compress.html

@@ -54,6 +54,7 @@ <h1><span class="logo-braces">{ }</span> <a href="http://codemirror.net/">CodeMi
           <option value="http://codemirror.net/mode/gfm/gfm.js">gfm.js</option>
           <option value="http://codemirror.net/mode/groovy/groovy.js">groovy.js</option>
           <option value="http://codemirror.net/mode/haskell/haskell.js">haskell.js</option>
+          <option value="http://codemirror.net/mode/htmlembedded/htmlembedded.js">htmlembedded.js</option>
           <option value="http://codemirror.net/mode/htmlmixed/htmlmixed.js">htmlmixed.js</option>
           <option value="http://codemirror.net/mode/javascript/javascript.js">javascript.js</option>
           <option value="http://codemirror.net/mode/jinja2/jinja2.js">jinja2.js</option>