add underscore

@@ -17,7 +17,9 @@
       "jquery-pjax": "1.0.1",
       "mlellipsis": "0.0.2",
       "lazyload": "1.9.5",
-      "iscroll": "5.1.2"
+      "iscroll": "5.1.2",
+      "mustache": "2.0.0",
+      "underscore": "1.6.0"
     },
     "devDependencies": {
       "expect.js": "0.3.1"