Changed panstamp ok from 0 to 1

Testing with water level sensor disconnected, about 10% of the time the
sensor status byte said the level sensor was online.  There are a lot
of checksum errors on the I2C - all the data was zero except checksum.
Zero is a valid value for the panstamp being online, so I changed it to
a 1.
Added pushbutton test and LED
made constants upper case
Initial Commit for Eagle files

PCB files designed in Eagle 6.5
v1.61 - water fill alert, fixed bug in xbee data
v1.58  - increased max water fill time

Also changed some constants