[Common UI] Show warning at startup

Show a warning about unsupported browsers at startup,
https://github.com/nasa/openmctweb/issues/137

platform/commonUI/general/bundle.json

@@ -19,6 +19,10 @@
             {
                 "implementation": "StyleSheetLoader.js",
                 "depends": [ "stylesheets[]", "$document", "THEME" ]
+            },
+            {
+                "implementation": "UnsupportedBrowserWarning.js",
+                "depends": [ "notificationService" ]
             }
         ],
         "stylesheets": [

platform/commonUI/general/src/UnsupportedBrowserWarning.js

@@ -0,0 +1,57 @@
+/*****************************************************************************
+ * Open MCT Web, Copyright (c) 2014-2015, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT Web is 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.
+ *
+ * Open MCT Web includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+/*global define*/
+
+/**
+ * This bundle provides various general-purpose UI elements, including
+ * platform styling.
+ * @namespace platform/commonUI/general
+ */
+define(
+    [],
+    function () {
+        "use strict";
+
+        var WARNING_TITLE = "Unsupported browser",
+            WARNING_DESCRIPTION = [
+                "This software has been developed and tested",
+                "using the latest Google Chrome,",
+                "and may be unstable in other browsers."
+            ].join(" ");
+
+        /**
+         * Shows a warning if a user's browser is unsupported.
+         * @memberof platform/commonUI/general
+         * @constructor
+         * @param {NotificationService} notificationService the notification
+         *        service
+         */
+        function UnsupportedBrowserWarning(notificationService) {
+            notificationService.alert({
+                title: WARNING_TITLE,
+                actionText: WARNING_DESCRIPTION
+            });
+        }
+
+        return UnsupportedBrowserWarning;
+    }
+);