Co-authored-by: Maik Menz
- redo of calibrate() function, Kudos to Maik Menz.
- Fix #59 Added orientation arguments to calibrate function (#59)
- Fix #57 calibration error scaling
- update library.json
- improve initialization of gax, gay and gaz
- add readRaw() to improve calibrate()
- update readme.md
- improve initialization
