add default config

src/public/config-default.js

@@ -0,0 +1,24 @@
+var Config = {
+    "plugins": [
+        "theme",
+        "import_evernote",
+        "export_pdf",
+        "langs"
+    ],
+    "langs": [
+        {
+            "filename": "en-us",
+            "name": "English"
+        },
+        {
+            "filename": "zh-cn",
+            "name": "简体中文"
+        },
+        {
+            "filename": "zh-hk",
+            "name": "繁体中文"
+        }
+    ],
+    "lang": "en-us",
+    "theme": "default"
+};

src/public/config.js

@@ -20,5 +20,5 @@ var Config = {
         }
     ],
     "lang": "en-us",
-    "theme": "vegetables"
+    "theme": "default"
 };