message: Update stylable-scripts' README
diff: A fork of react-scripts, with the following changes:
  - Uses TypeScript instead of Babel, configured to work with Webpack's tree-shaking and dynamic chunks on import();
  - Adds built-in support for [Stylable](http://stylable.io/).
  -- Uses Mocha for Node.js-based tests, and Karma for browser-based tests.
  +
  +# Getting started
  +
  +In your terminal, run:
  +```
  +$ npx create-react-app --scripts-version stylable-scripts [APP NAME]
  +```
  