Wibeee

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Added more functions

1. Added `WiBeee.getScale()`
2. Added `WiBeee.getCoilStatus()`
3. Added `WiBeee.getGround()`
4. Added `WiBeee.getModel()`
5. Added `WiBeee.getFirmwareVersion()`
6. Added `WiBeee.getTime()`
7. Moved `WiBeee.getInfo()` to `WiBeee.__getInfo()`
8. Moved `WiBeee.power()` to `WiBeee.getPower()`
9. Moved `WiBeee.current()` to `WiBeee.getCurrent()`
10. Moved `WiBeee.voltage()` to `WiBeee.getVoltage()`
11. Moved `WiBeee.frequency()` to `WiBeee.getFrequency()`

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Added documentation.

1. Moved `WiBeee.getHost()` to `WiBeee.getIP()`
2. Moved `WiBeee.host` to `WiBeee.ip`
3. Removed `pretty` option in `WiBeee.power()`
4. Moved `WiBeee.callURL()` to `WiBeee.__callURL()`
5. Moved `errors.BadHostName` to `errors.BadIP`
6. Moved `WiBeee.autoDiscover()` to `WiBeee.__findDeviceIP()`
7. Added variable `attempts` to `WiBeee.__findDeviceIP`
8. Added `WiBeee.setTimeout()`
9. Added `WiBeee.setVerbose()`