Update Seafile version to 6.3.1

Clarification: rpi GitHub Issues support dropped (05.07.2018)

README.md

@@ -2,15 +2,17 @@ Seafile server package for Raspberry Pi. Maintained by seafile community.
 
 ## Download
 
-- The latest **stable** rpi version is 6.2.5, [click here to download](https://github.com/haiwen/seafile-rpi/releases/download/v6.2.5/seafile-server_6.2.5_stable_pi.tar.gz).
+- The latest **stable** rpi version is 6.3.1, [click here to download](https://github.com/haiwen/seafile-rpi/releases/download/v6.3.1/seafile-server_6.3.1_stable_pi.tar.gz).
 
 ## Manual and Guides
 
 - [Seafile Offical Document](http://manual.seafile.com/deploy/using_sqlite.html)
 
-## Reporting Issues
+## Reporting Issues / GitHub Issues
 
-If you have any problems or suggestions when using the seafile rpi server package, please report it on [seafile server forum](https://forum.seafile.com/).
+If you have any problems or suggestions when using the seafile rpi server package, please report it on [seafile server forum](https://forum.seafile.com/). 
+
+GitHub Issues support is dropped and will not  be maintained anymore. If you need help, clarification or report some weird behaviour, please post it on the [seafile server forum](https://forum.seafile.com/) as well.
 
 ## Contributors