Added download subcommand.
Added optional feature to download files from items concurrently using the gevent networking library. If the option is selected, but gevent is not installed an, ImportError exception will be raised with a message detailing how to install gevent with a single pip command.
Added --formats option to the metadata subcommand. This makes it easy to retrieve a list of file formats contained within an item, which can be used for selectively download files with the download subcommand.
Removed duplicate accidental line.
Forgot to convert line from argparse to docopt...
Upped version.
Cleaned up docs. Use **kwargs when calling upload_file() from upload().
Merge branch 'master' of github.com:jjjake/ia-wrapper into fast
define header_names on separate line for easier reading.
Upped version.