add mustache sections unit test

unittest.vim

@@ -41,7 +41,7 @@ if exists('g:user_zen_settings')
   let g:user_zen_settings = s:old_user_zen_settings
 endif
 let &more=oldmore
- 
+
 finish
 [
 {
@@ -400,5 +400,16 @@ finish
     },
   ],
 },
+{
+    'category': 'mustache',
+    'tests': [
+        {
+        'name': "div#{{foo}}",
+        'query': "div#{{foo}}",
+        'type': "mustache",
+        'result': "<div id=\"{{foo}}\"></div>\n",
+        },
+    ],
+},
 ]
 " vim:set et: