add mime.types file in root classpath from AWS SDK
add DIR listing to list output for feature parity with s3cmd output
add test reminder for observed bug in put progress bar, clean up resources
remove jcommander, convert everything over to the airline commandline argument parser
hack to cap the progress bar at 100% when values over 100 are passed in
add support for passing in AWS access keys per #3, add additional endpoint support, add verbose flag for printing full stacktraces, additional help screen tweaks