Committer: Simon Matthews
 Changes to be committed:
Hardware info no longer hardwired, now in config file
	deleted:    ads1x15_ex_comparator.py
	deleted:    ads1x15_ex_differential.py
	deleted:    ads1x15_ex_singleended.py
	modified:   battery.cfg
	modified:   config.py
	modified:   getdata.py