Updated to a modified design for differential voltage measurement
Added domain name + descriptions for the functional schematic blocks
Merge branch 'master' of github.com:felicitus/PowerMeterShield

Conflicts:
	PowerMeterShield.brd
	PowerMeterShield.sch
	PowerMeterShield_bot.png
	PowerMeterShield_sheet1.png
	PowerMeterShield_top.png
Added functional block descriptions + url on board