Add notes about "ready for work" label

CONTRIBUTING.md

@@ -1,6 +1,6 @@
 # Developing for Jasmine Core
 
-We welcome your contributions! Thanks for helping make Jasmine a better project for everyone. Please review the backlog and discussion lists before starting work.  What you're looking for may already have been done. If it hasn't, the community can help make your contribution better.
+We welcome your contributions! Thanks for helping make Jasmine a better project for everyone. Please review the backlog and discussion lists before starting work.  What you're looking for may already have been done. If it hasn't, the community can help make your contribution better. If you want to contribute but don't know what to work on, [issues tagged ready for work](https://github.com/jasmine/jasmine/labels/ready%20for%20work) should have enough detail to get started.
 
 ## Links