Document Java version requirements correctly

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/csv/trunk@1610471 13f79535-47bb-0310-9956-ffa450edef68
Correct JavaDoc that was pointing to method parseFile which has moved to the Parser

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/csv/trunk@1610473 13f79535-47bb-0310-9956-ffa450edef68