Retrieves data about a given vehicle using the aprs.fi API.
APRS, or Automatic Packet Reporting System, is a two-way real-time digital communications system between all vehicles in a network.
The script (script.py) will retrieve JSON data for a given call sign, and will store the JSON data into a text file (data.txt).
getData(CALL_SIGN)
: Reads the given call sign (such as "ARISS" for the ISS), and returns arequests
response.writeDataToFile(responseJSON)
: Takes in arequests
JSON object, and writes the JSON data to a file.