Some enhancements

[HomeKidd]

Hi!

First of all I'm appreciate the work you've put into this library! 😄

Some more features would be great to have in the library, because most of the metrics are needed for most Weather APIs (e.g.: WeatherUnderground, etc..)

Like:

• Wind speed 1 minute average
• Windgust
• Rainfall intensity (mm/h or in/h)

I've already made an array for collecting Wind speeds for 1min average, also I can get the Windgust by searching for the highest number in the 1 min array 😄

The other thing can be useful is calibrating the Wind direction, since ADC values can be off and this can effect the whole wind direction. Currently i'm just simply adding/subtracting a value from the actual (degree) reading. It works for most of the time, but some wind positions are still wrong since its not related to the actual position rather than the ADC values.