cd ~/github/islandora git clone git://github.com/giancarlobi/islandora_relationship_editor mv islandora_relationship_editor /usr/share/v2p2demo2.to.cnr.it/sites/all/modules/islandora/
cd ~ wget https://codeload.github.com/semsol/arc2/zip/master mv master arc2.zip unzip arc2.zip mv arc2-master arc2 mv arc2 /usr/share/v2p2demo2.to.cnr.it/sites/all/modules/islandora/islandora_relationship_editor/
Enable Islandora Relationship Editor from DRUPAL admin.
Enable “Related objects” block from DRUPAL admin.