Pi power-bank HAT

A HAT designed to host the battery and electronics from a 2600mah Power bank such as :

http://www.dx.com/p/kinston-universal-usb-output-2600mah-li-ion-portable-external-power-bank-black-366080#.VcT5vJPjeOw

or

http://www.dx.com/p/2600mah-external-battery-mobile-power-bank-blue-lemon-scent-205731#.VcT61JPjeOw

This HAT will block access to the DSI port ... but who cares for now.