open deck 2.0 beta

*named nearly all connections in Circuit.sch
*bump last revision date in sources
*properly formatted readme using markdown
*updates on INSTALATION.txt
*removed LICENCE.txt, licencing info is now inside readme
*formatting changes to elements_order.txt and parts_list.txt
*named all elements on Layout.cdr, minor fixes as well
*removed MIDI library - it is not my project so it doesn't seem
appropriate to have it in this repo
*removed LICENCE.txt and replaced it with some additional info on
formats and fonts used
*increased ground isolation on 4 Buttons LR.brd