### Bug Report or Feature Request (mark with an `x`) ``` - [x] bug report -> please search issues before submitting - [ ] feature request ``` ### Repro steps. In step 0 it states to install platform-server. For npm it uses the `--save-dev` flag, for yarn it doesn't use the `--dev` flag. Which should it be? It should be made consistent to avoid confusion. <img width="747" alt="screen shot 2017-07-31 at 13 37 27" src="https://user-images.githubusercontent.com/5277488/28778086-bb488d2e-75f5-11e7-9962-e18a2230fb26.png">