Merge pull request #533 from alexwaters/readme

Updated readme file with timers.

README.md

@@ -27,3 +27,16 @@ help test the Bitcoin core, please contact QA@BitcoinTesting.org.
 
 Feature branches are created when there are major new features being
 worked on by several people.
+
+From time to time a pull request will become outdated. If this occurs, and
+the pull is no longer automatically mergeable; a comment on the pull will
+be used to issue a warning of closure. The pull will be closed 15 days
+after the warning if action is not taken by the author. Pull requests closed
+in this manner will have their corresponding issue labeled 'stagnant'.
+
+Issues with no commits will be given a similar warning, and closed after
+15 days from their last activity. Issues closed in this manner will be 
+labeled 'stale'. 
+
+Requests to reopen closed pull requests and/or issues can be submitted to 
+QA@BitcoinTesting.org.