Compile with WITH_RIME 1 for neighbor discovery and with ENERGEST_CONF_ON
for energy estimation.

Estimated consumption with batteries (2.4 V):
						Curr		Power
ENERGEST_TYPE_CPU: 		7.5 mA      18 mW
ENERGEST_TYPE_LPM: 		3 mA		7.2 mW
ENERGEST_TYPE_TRANSMIT: 21 mA	 	50.4 mW
ENERGEST_TYPE_LISTEN: 	19 mA		45.6 mW