Updating CONTRIBUTING.md & README.md on master branch

Signed-off-by: James Sutton <james.sutton@uk.ibm.com>

Author: jpwsutton

CONTRIBUTING.md

@@ -58,11 +58,11 @@ Contact the project developers via the project's development
 Search for bugs:
 ----------------
 
-This project currently uses [Bugzilla](https://bugs.eclipse.org/bugs/buglist.cgi?product=Paho) to track ongoing development and issues.
+This project uses GitHub Issues here: [github.com/eclipse/paho.mqtt.java/issues](https://github.com/eclipse/paho.mqtt.java/issues) to track ongoing development and issues.
 
 Create a new bug:
 -----------------
 
 Be sure to search for existing bugs before you create another one. Remember that contributions are always welcome!
 
-- [Create new Paho bug](https://bugs.eclipse.org/bugs/enter_bug.cgi?product=Paho)
+- [Create new Paho bug](https://github.com/eclipse/paho.mqtt.java/issues/new)

README.md

@@ -18,7 +18,7 @@ Paho reflects the inherent physical and cost constraints of device connectivity.
 - Paho Java Client Page: [https://eclipse.org/paho/clients/java/](https://eclipse.org/paho/clients/java)
 - GitHub: [https://github.com/eclipse/paho.mqtt.java](https://github.com/eclipse/paho.mqtt.java)
 - Twitter: [@eclipsepaho](https://twitter.com/eclipsepaho)
-- Issues: Currently [https://bugs.eclipse.org/bugs/buglist.cgi?component=MQTT-Java](https://bugs.eclipse.org/bugs/buglist.cgi?component=MQTT-Java), though will soon be GitHub Issues.
+- Issues: [https://github.com/eclipse/paho.mqtt.java/issues](https://github.com/eclipse/paho.mqtt.java/issues)
 - Mailing-list: [https://dev.eclipse.org/mailman/listinfo/paho-dev](https://dev.eclipse.org/mailman/listinfo/paho-dev)
 
 ## Using the Paho Java Client