Update getting-started.md

[csbarnes]

If npx react-native run-windows is not run from an elevated Command Prompt it will fail.

edit: for the first run

[chrisglein]

@asklar has done some review of where we need elevation. Adding him to requested reviewers to comment.

[asklar]

@asklar has done some review of where we need elevation. Adding him to requested reviewers to comment.

Yes, now this should only happen for some cases. The short of it:

• The first time you run it, we may have to enable developer mode which requires elevation. We prompt for elevation now if we need it so it doesn't fail.
• For debug builds on C++ projects, we deploy from layout so registering the APPX is not necessary which lets us avoid elevation
• For release builds, we'll prompt for elevation if we need to in order to install the app signing certificate and uninstall the existing app.

I also have a PR out for a script to check and install any dependencies that may be missing which will alleviate some of this too. See microsoft/react-native-windows#4876

[ghost]

This pull request has been automatically marked as stale because it has been marked as requiring author feedback but has not had any activity for 7 days. It will be closed if no further activity occurs within 7 days of this comment.