add missing developer info (OSSRH requirement)

[wajda]

Last time I was too aggressive cleaning stuff up, and removed developer info and project description tags which are actually required by OSSRH

[ERROR] Failed to execute goal org.sonatype.plugins:nexus-staging-maven-plugin:1.6.8:deploy (injected-nexus-deploy) on project root-pom: Remote staging failed: Staging rules failure! -> [Help 1]
  org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.sonatype.plugins:nexus-staging-maven-plugin:1.6.8:deploy (injected-nexus-deploy) on project root-pom: Remote staging failed: Staging rules failure!