Py-netgear-plus

- set SCAN_INTERVAL from 10 to 30 seconds

- updated README
- fixed port IO sensor
- added aggregated statistics sensors

- reworked api code
- added model/product auto-detection
- IMPORTANT: re-adding of devices required

- added bootloader version V2.06.01, thanks to gdi0110, closes PR 16

- fixed support for newer 2.06.X firmwares
- added port status (port connected, port speed)

**Full Changelog**: https://github.com/ckarrie/ckw-ha-gs108e/compare/v0.5.1...v0.5.2

- added total transferred mbytes and received mbytes by port (10)