message: improve readme - update plnkr with a4
diff: @@ -20,7 +20,7 @@ This package assumes that you are building an Angular app with TypeScript. Angul
  **Please don't use github to ask questions. Use stackoverflow instead: http://stackoverflow.com/questions/tagged/angular-mdl.**
  -**Here is a plnkr if you'd like to play around http://plnkr.co/edit/I3dLfLUDIH2xlEJqj0da?p=preview.**
  +**Here is a plnkr if you'd like to play around http://plnkr.co/edit/f73PKEmzpAcchza8Q9rb?p=preview.**
  ### Status of the npm package version 3 (mdl version 1.3.0; angular 4)
  @@ -111,5 +111,5 @@ Every contribution is welcome. Please checkout the [CONRIBUTION.md](https://gith
  # Remarks
  -If you need a working example for the current angular-cli with the current angular2-mdl and angular versions please have a look at:
  -[https://github.com/mseemann/a2-mdl-webpack](https://github.com/mseemann/a2-mdl-webpack).
  +If you need a working example for the current angular-cli with the current angular-mdl and angular versions please have a look at:
  +[https://github.com/mseemann/angular-mdl-a4-angular-cli](https://github.com/mseemann/angular-mdl-a4-angular-cli).
  