Added PHP Copy & Paste detector to contributing file
Added PHP Copy & Paste detector to contributing file

JamesForks/deployer,REBELinBLUE/deployer,REBELinBLUE/deployer,JamesForks/deployer,JamesForks/deployer,JamesForks/deployer,REBELinBLUE/deployer,REBELinBLUE/deployer