Merge pull request #70 from ayshih/master

Seg faults be gone!
Service and reader for SBC temperatures/voltages
Moving SBC info parsing from service to a separate thread
Added make install option to Makefile
Forgot to actually add code for SBC service
Output SBC temperature in telemetry packet
Merge pull request #80 from ayshih/sbc_info

SBC temperature and voltages now provided by service