User Story - Augment incoming sensor data with weather data

[mareklinka]

Since weather data is an important predictor of pollution levels, all incoming sensor data should be also augmented by weather data from openweathermap's API.

We require the following:

• wind direction
• wind speed
• humidity (this might be supplied by the sensor, in that case take the sensor reading)
• atmospheric pressure (might as well come from the sensor)

[dniklaus]

Relative Humidity and Temperature are definitely measured by the Detector (sensor), but not atmospheric pressure.

Refer to #20 to see what is measured by the Detector.