check out ian black's work

[jaxxzer]

https://github.com/IanTBlack/br_sensors

1. Changed variable/function names to more closely match TSYS01 manual.
2. Combined read() and temperature() functions into one.
3. Split _calculate into two functions (_read_adc and _adc2temp).
4. Added multiple selection options to give user options for selecting temperature conversion units.
5. Changed Kelvin conversion from 273 to 273.15.
6. Added experimental burst_avg_temperature. Rapidly takes X number of samples, drops the first and last, and averages the rest. Need to run tests to determine if it provides any benefit.
7. Added serial number function. I'm still trying to understand how bit manipulation works, so I may have gotten this wrong. I assumed it could be manipulated the same way as _calculate.