[Pharo 8.0] Build #312: SUCCESS

There is a new Pharo build available!
 
The status of the build #312 was: SUCCESS.

Could not extract further issue information from commit message: update the welcome message

better welcome message for first time PRs
Build Url: https://ci.inria.fr/pharo-ci-jenkins2/job/Test%20pending%20pull%20request%20and%20branch%20Pipeline/job/Pharo8.0/312/