default to no file suffix on the commandline
default to no file suffix on the commandline

git-svn-id: aa3aca99a267bb8c861e7217b855a78ec78db5b0@9 1b3fd781-6a22-fc33-3c53-039dc0e80cbb

aharpour/pngtastic,julioa/pngtastic,julioa/pngtastic,julioa/pngtastic,depsypher/pngtastic,aharpour/pngtastic,aharpour/pngtastic