add bundle option to webpack build

Author: PeterStaev

gruntfile.js

@@ -68,7 +68,7 @@
             "ci-webpack-demo": {
                 cmd: function (platform, demoSuffix) {
                     return "cd demo" + (demoSuffix != "" ? "-" + demoSuffix : "") + " && npm install && tns build " + platform
-                        + " --env.uglify --env.snapshot"
+                        + " --bundle --env.uglify --env.snapshot"
                         + (demoSuffix === "ng" ? " --env.aot" : "");
                 }
             },
@@ -126,4 +126,4 @@
         "lint",
         "exec:npm_publish"
     ]);
-};
+};