Update README.md

Author: thomthom

.github/README.md

@@ -8,8 +8,4 @@ This is currently a work in progress and it may change a lot in the near future.
 
 The stubs are automatically generated by a YARD template which we will publish in our sketchup-yard-template repository: https://github.com/SketchUp/sketchup-yard-template
 
-We are experimenting with allowing pull requests to this repository. You can make changes to the `.rb` files in the `lib/sketchup-api-stubs/stubs` folder and send us a pull request.
-
-If you send a pull request, please test the changed by building the documentation first. Make sure you have the nessecary gems installed; `bundle install`. From the location where you clone this repository, run `bundle exec yardoc`.
-
 Guidance on how to set up editors to use the stubs will come.