* Added missing functions and parameters to documentation.
- AnalogSensor: Missing parameter "custom".
- I2CDevice: Missing parameters "port", "address", "custom", "powered", and "nxt_quirk" with attempted explanation of parameters.
- UARTDevice: Missing default parameter value.
- LWP3Device: Missing "connect" parameter.
- Added missing connect and disconnnect methods.
- XboxController: Missing documentation in constructor and missing methods.
* Minor changes to the documentation
Made it more clear and less verbose when to skip connect to bluetooth devices.
