Changed EnderIO recipe to support the new Capacitor Bank - fixes #17

Older enderIO versions are still supported, as the code tries to find the new CapBank first, if not found - it will use the old Capacitor Bank.

I suggest to keep this for at least 1-2 months, so noone wil be forced to upgrade eio while using the last recent power-converters version.

Maybe the recipe could be changed to allow all types of Capacitor Banks being used (basic, normal and vibrant) - at the moment it requires the Normal one.