Cygwin compatibility: battery and network

[danerwilliams]

Add compatibility for retrieving battery and network information on cygwin. See scripts/battery.sh and scripts/network.sh for code details. There are multiple spots that look something like the code block below where compatibility would be added:

CYGWIN*|MINGW32*|MSYS*|MINGW*)
	# leaving empty - TODO - windows compatability
;;

Really this just consists of adding a pipeline to retrieve the battery charging status, current percentage, and network SSID in each instance.