New pr policy update (#365)

* Updated CONTRIBUTING.md to add new PR policy

* Updated README.md to point to the right contribution guidelines

Author: shivanshukumar

CONTRIBUTING.md

@@ -1,16 +1,21 @@
 # How to Contribute
 
+While our SDKs are open source, we currently do **NOT** accept any feature request PRs. 
+In some rare cases, we may accept bug fixes but there is absolutely no commitment or expectation for that and you should not rely on that in any way.
+If you want to request a feature or report a bug, please contact Leanplum Support.
+
 Here are some important resources:
 
   * [Leanplum Docs](http://leanplum.com/docs) The official Leanplum docs.
-  * Support: Get help at [email protected].
+  * Leanplum Support: Get help at [email protected].
+
 
 ## Submitting changes
 
 Please consider following guidelines before creating a PR:
 
-- Confirm the intention and design of your change by reaching out to your Customer Success Manager or to Leanplum Dev Team through a new Github Issue.
-- Start creating your pull request from `develop` branch
+- Confirm the intention and design of your change by reaching out to your Customer Success Manager.
+- Start creating your pull request from `master` branch
 - Please send a GitHub Pull Request with a clear list of what you've done (read more about [pull requests](https://help.github.com/articles/about-pull-requests/)).  
 - Add unit tests for the code that you have touched.
 - Please follow the existing coding conventions (which are mostly standard of the default IDE).

README.md

@@ -22,7 +22,7 @@ To build the sdk run:
 ./gradlew assembleRelease
 ```
 ## Contributing
-Please follow the Conventional Changelog Commit Style and send a pull request to `master` branch.
+Please follow the guidelines under https://github.com/Leanplum/Leanplum-Android-SDK/blob/master/CONTRIBUTING.md
 ## License
 See LICENSE file.
 ## Support