* added GetPumpStatus / SetPumpFlow commands
* Updated README.md with GetPumpStatus / SetPumpFlow information
* rename `setPointType` to `isRPMs`
* renamed val0 to pumpType and val1 to isRunning
* added `unknown command` case
* fixed lint error
* Renamed unknown values to pumpUnknown1 and pumpUnknown2
* renamed 30 to unknownCommand
