Slackbuild added to repository
Included the Slackbuild Description (slack-desc)
The iron.default file is added;  This file contains environment variables
that are set during the launch of Iron.  It will reside at /etc/default/iron
when installed.
Added iron.wrapper;  This file ends up being put in /usr/bin/iron
This contains information about the user-profile and launches the
/opt/iron/iron  command
Add the Launcher (iron-browser.desktop)