Setup demo project and screenshots

[mbi]

A nice and customizable cron field with great, easy to use UI.

Such a catchy teaser just calls for a screenshot. (i.e. what's so fancy about this fancy cronfield? :trollface: Amaze us!)

[saeedsq]

Just included some screen shots for you:

http://uploads.im/Mkhig.png http://uploads.im/hiDBz.png http://uploads.im/4cx7r.png http://uploads.im/1q2GQ.png http://uploads.im/Ekarl.png

I'm planning to add a demo link to repository README file.