added cl option to POS1 for num Iterations
added cl option to POS1 for num Iterations

hlin117/factorie,asubbaswamy/factorie,strubell/factorie,melisabok/factorie,Craigacp/factorie,factorie/factorie,joprice/factorie,digitalreasoning/factorie-scala-210,pogren-oracle/factorie,zxsted/factorie,patverga/factorie,malcolmgreaves/factorie