Update PR guidelines

Reviewed By: mkonicek

Differential Revision:D3054232
Ninja: oss only

fb-gh-sync-id: 6cb9b361f62c1bc009a412049b47be99c423d6e9
shipit-source-id: 6cb9b361f62c1bc009a412049b47be99c423d6e9

docs/PullRequestGuidelines.md

@@ -1,13 +1,12 @@
 ## Tips on reviewing pull requests
 
-Does the PR miss info required in the [Pull request template](https://github.com/facebook/react-native/blob/master/PULL_REQUEST_TEMPLATE.md)? Ask for it and link to the template. Add labels 'Needs revision' and 'Needs response from author'. Examples: [#6395](https://github.com/facebook/react-native/pull/6395).
-Example:
+Does the PR miss info required in the [Pull request template](https://github.com/facebook/react-native/blob/master/PULL_REQUEST_TEMPLATE.md)? Example: [#6395](https://github.com/facebook/react-native/pull/6395). Add labels 'Needs revision' and 'Needs response from author'. Add a response like:
 
 > Hey @author, thanks for sending the pull request.
 > Can you please add all the info specified in the [template](https://github.com/facebook/react-native/blob/master/PULL_REQUEST_TEMPLATE.md)? This is necessary for people to be able to understand and review your pull request.
 
-Does the code style match the [Style guide](https://github.com/facebook/react-native/blob/master/CONTRIBUTING.md#style-guide), especially consistency with the rest of the codebase? If not, link to the style guide and add the label 'Needs revision'.
+Does the code style match the [Style guide](https://github.com/facebook/react-native/blob/master/CONTRIBUTING.md#style-guide), especially consistency (formatting, naming) with the rest of the codebase? If not, link to the style guide and add the label 'Needs revision'.
 
-Does the pull request add a completely new feature we don't want to add to the core and maintain? Ask the author to release it a separate npm module.
+Does the pull request add a completely new feature we don't want to add to the core and maintain? Ask the author to release it a separate npm module and close the PR. Example: [#2648](https://github.com/facebook/react-native/pull/2648).
 
-Does the pull request do several unrelated things at the same time? Ask the author to split it.
+Does the pull request do several unrelated things at the same time? Ask the author to split it.