debug parameter no longer passed in from flask_script

The debug parameter now defaults to False in flask, so the
app.config.get('DEBUG', use_debugger) will never default to
use_debugger as the 'DEBUG' key will always exist.
Better to leave this option for the user to set it up in the app's
config.
Merge pull request #54 from rvoicilas/master

debug parameter no longer passed in from flask_script
Ignore autoenv
Cleanup and simplify tests
Set Travis-CI status image as link to build status
Drop support for Python 2.5.  Add support for Python 3.3
Jumping the gun on Python 3.3 support.  Forgot Flask doesn't support it yet, oops
Use proper argparse subparsers
Support application-wide options