anthony ray hinton released 30 years after being in prison on death row .
hinton was convicted of shooting to death two fast food restaurant mangers in two separate 1985 robberies .
hinton was granted re-trial by the u.s. supreme court and experts found that there was not enough evidence to prove hinton 's gun shot the men .
` he was a poor person who was convicted because he did n't have the money to prove his innocence at trial , ' said hinton 's attorney .