Remove misleading reference to issue tracker

Closes #253

Author: JonRowe

README.md

@@ -33,8 +33,8 @@ can treat each RSpec repo as an independent project.
 
 ## Patches
 
-Please submit a pull request or a github issue to one of the issue trackers
-listed below. If you submit an issue, please include a link to either of:
+Please submit a pull request or a github issue. If you submit an issue, please
+include a link to either of:
 
 * a gist (or equivalent) of the patch
 * a branch or commit in your github fork of the repo