GUI extension Yeoman generator

Change-Id: If6b3fae44e4ee8a7bde36600cdc71d54d49fbf6e
(cherry picked from commit 3ca3e2086046a61b3f58813e7cb9052a600e2323)
diff --git a/generator-xos-gui-extension/generators/templates/conf/browsersync.conf.js b/generator-xos-gui-extension/generators/templates/conf/browsersync.conf.js
new file mode 100755
index 0000000..7e3fbc2
--- /dev/null
+++ b/generator-xos-gui-extension/generators/templates/conf/browsersync.conf.js
@@ -0,0 +1,40 @@
+
+/*
+ * Copyright 2017-present Open Networking Foundation
+
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+
+ * http://www.apache.org/licenses/LICENSE-2.0
+
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+
+const conf = require('./gulp.conf');
+const proxy = require('./proxy');
+
+module.exports = function () {
+  return {
+    server: {
+      baseDir: [
+        conf.paths.tmp,
+        conf.paths.src
+      ],
+      middleware: function (req, res, next) {
+        if (req.url.indexOf('xosapi') !== -1 || req.url.indexOf('xos') !== -1 || req.url.indexOf('socket') !== -1) {
+          proxy.api.web(req, res);
+        }
+        else {
+          next();
+        }
+      }
+    },
+    open: false
+  };
+};