setup various services and login page

src/services/tokenService.js

@@ -0,0 +1,35 @@
+var g_tokenService = function () {
+    var _service = {}, _token;
+
+    _service.setToken = function (token, callback) {
+        _token = token;
+        chrome.storage.local.set({
+            'authBearer': token
+        }, function () {
+            callback();
+        });
+    };
+
+    _service.getToken = function (callback) {
+        if (_token) {
+            return callback(_token);
+        }
+
+        chrome.storage.local.get('authBearer', function (authBearer) {
+            if (authBearer) {
+                _token = authBearer;
+            }
+
+            return callback(_token);
+        });
+    };
+
+    _service.clearToken = function (callback) {
+        _token = null;
+        chrome.storage.local.remove('authBearer', function () {
+            callback();
+        });
+    };
+
+    return _service;
+};