Update README.md

Author: Aditya8821

Diff for: AutomationScripts/ISS Tracker/README.md

@@ -5,6 +5,9 @@ This displays the current location of ISS along with onboarded crew names. It wo
 This is possible by using some of the modules of python like JSON, Urllib.requests, Webbrowser, Geocoder etc. Numerous functions are used to create thsi script.
 Some of the modules are listed below.
 
+##Purpose:
+This script helps to get the information about ISS that is revolving over the earth gravitational field. It helps us to know the names of onboarded crew inside it along with the current real time location in form of latitude and longitude. Then using that lat and long we have mapped that particular location in the map.
+
 - **JSON:**
 This JSOn module is used to decode a JSON document from a string that may have extraneous data at the end.