message: Tweak README.
diff: @@ -9,17 +9,12 @@ elements.
  ### Polymer
  -Typings for Polymer 2 are planned for regular release starting with version
  -2.4, and are available in the
  -[`types/`](https://github.com/Polymer/polymer/tree/master/types) directory on
  -the `master` branch now.
  -
  -Once Polymer 2.4 is released, to use the typings, install Polymer normally from
  -Bower, and add a [triple-slash
  +To use the typings, install Polymer normally from Bower (versions 2.4 and
  +above), and add a [triple-slash
  directive](https://www.typescriptlang.org/docs/handbook/triple-slash-directives.html)
  anywhere in your TypeScript project for the typings you require. Each HTML
  -import from Polymer has a corresponding typings file. For example, if you
  -depend on `polymer-element.html`:
  +import from Polymer has a corresponding typings file. For example, if you depend
  +on `polymer-element.html`:
  ```ts
  /// <reference path="./bower_components/polymer/types/polymer-element.d.ts" />`
  