Begin to break config out into ini file

Begin to migrate from hardcoded variables to a configuration file.

Copy the example iNCIPit.ini-example file to iNCIPit.ini and make
your changes there.

At this point, only the username and password are moved to a config
file.

This commit introduces a new dependency on Config::Tiny

SECURITY NOTE:
You will want to take steps to protect your configuration file, and
ensure that it is NOT accessible via the web server.

Signed-off-by: Jeff Godin <jgodin@tadl.org>