README describes PR validation more fully
README describes PR validation more fully

lrytz/scala-jenkins-infra,adriaanm/scala-jenkins-infra,retronym/scala-jenkins-infra,retronym/scala-jenkins-infra,lrytz/scala-jenkins-infra,adriaanm/scala-jenkins-infra,adriaanm/scala-jenkins-infra,scala/scala-jenkins-infra,retronym/scala-jenkins-infra,scala/scala-jenkins-infra,lrytz/scala-jenkins-infra