Removed PRs for features/added note about Slack

CONTRIBUTING.md

@@ -6,13 +6,19 @@ There are many ways to contribute – reporting bugs, feature suggestions, fixin
 
 ## Reporting Bugs, Asking Questions, Sending Suggestions
 
-Just [file a GitHub issue](https://github.com/wordpress-mobile/WordPress-iOS/issues), that’s all. If you want to prefix the title with a “Question:”, “Bug:”, or the general area of the application, that would be helpful, but by no means mandatory. If you have write access, add the appropriate labels.
+Just [file a GitHub issue](https://github.com/wordpress-mobile/WordPress-iOS/issues), that’s all. If you want to prefix the title with a “Question:”, “Bug:”, "Feature Request:", or the general area of the application, that would be helpful, but by no means mandatory. If you have write access, add the appropriate labels.
 
 If you’re filing a bug, specific steps to reproduce are helpful. Please include the part of the app that has the bug, along with what you expected to see and what happened instead.  A screenshot is always helpful as well.
 
 ## Submitting code changes
 
-We welcome Pull Requests for any new feature or bug fix that you'd like to contribute!  More details on our process can be found in the [Make WordPress Mobile handbook](https://make.wordpress.org/mobile/handbook/pathways/ios/), specifically [here](https://make.wordpress.org/mobile/handbook/pathways/ios/how-to-contribute/).
+We welcome Pull Requests for bug fixes on any open issues that you'd like to contribute!  More details on our process can be found in the [Make WordPress Mobile handbook](https://make.wordpress.org/mobile/handbook/pathways/ios/), specifically [here](https://make.wordpress.org/mobile/handbook/pathways/ios/how-to-contribute/).
+
+## Discussion
+
+Aside from writing issues and pull requests, you can also hang out in the #mobile WordPress.org Slack channel with other WordPress Mobile developers/contributors. Check out chat.wordpress.org for instructions on how to create an account in Slack.
+
+The purpose of the Slack chat is to provide updates about ongoing initiatives regarding the mobile apps and to discuss, prioritize and coordinate future changes. If you have questions, Slack chat is a great place to start.
 
 ## Contribute to translations