Fix readme
initial thought on stormpath cli

this is heavy WIP and some architectural decisions may
be very wrong
add stormpath_cli.auth to abstract away the API key discovery
add stormpath_cli.output to deal with specifics of JSON/TSV output
actions shouldn't worry about presentation

Ideally, actions also shouldn't worry about specifics of a particular
resource type. It remains to be seen if we'll be able to achieve that.
simplify stormpath_cli.resources
refactor stormpath_cli.main

Adds better error messages, correctly interpretes default action
if none is listed, removes authentication and output logic (moved
to auth and output submodules), and updates docopt with the newly
supported options.
setup.py: fix entry_points so the 'stormpath' script gets installed
small packaging tweaks