Create wrapper script around mojom's generate.dart in the Sky package.

sky/sdk/README.md

 Contributing
 ============
 
 [sky_sdk](https://github.com/domokit/sky_sdk) is generated from the
 [mojo repository](https://github.com/domokit/mojo) using
 [deploy_sdk.py](https://github.com/domokit/mojo/blob/master/sky/tools/deploy_sdk.py)
 Static files (including this README.md) are located under
 [sky/sdk](https://github.com/domokit/mojo/tree/master/sky/sdk).  Pull
 requests and issue reports are glady accepted at the
 [mojo repository](https://github.com/domokit/mojo)!
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 adding a [pubspec.yaml](https://www.dartlang.org/tools/pub/pubspec.html):
 
  pubspec.yaml for your app:
 ```yaml
 name: your_app_name
 dependencies:
  sky: any
 ```
 
 Once the pubspec is in place, create a `lib` directory (where your dart code
-will go) and run `pub get` to download all necessary dependencies and create
-the symlinks necessary for 'package:your_app_names/main.dart' includes to work.
+will go), ensure that the 'dart' and 'pub' executables are on your $PATH and
+run the following:
+
+`pub get && pub run sky:init`.
 
 Currently the Sky Engine assumes the entry point for your application is a
 `main` function located inside a `main.sky` file at the root of the package.
 `.sky` is an html-like format:
 ```
 <sky>
 <script>
 import 'package:your_app_name/main.dart';
 
 void main() {
@@ skipping 147 matching lines @@
 [Keyboard](https://github.com/domokit/mojo/blob/master/mojo/services/keyboard/public/interfaces/keyboard.mojom)
 service to allow Sky Framework Dart code to interface with the underlying
 platform's Keyboard, but also to expose any additional non-Dart business logic
 to Sky/Dart UI code.
 
 As and example, [SkyApplication](https://github.com/domokit/mojo/blob/master/sky/shell/org/domokit/sky/shell/SkyApplication.java)
 exposes a mojo `network_service` (required by Sky Engine C++ code)
 [SkyDemoApplication](https://github.com/domokit/mojo/blob/master/sky/apk/demo/org/domokit/sky/demo/SkyDemoApplication.java)
 additionally exposes `keyboard_service` and `sensor_service` for use by the Sky
 Framework from Dart.