updated readme file

Author: MO

README.md

@@ -1,10 +1,19 @@
 
-Create Google Maps API Key from here
-https://developers.google.com/maps/documentation/javascript/get-api-key
+### How to Install
+Clone the repo
+do `npm install`
+run the ionic server `ionic serve`
 
+### IMP
+Google Maps API Key is required to see the map, you can go through the below link to create one and make sure you have given the permissions to your app
+https://developers.google.com/maps/documentation/javascript/get-api-key
 
+You can directly install below plugins If they are not installed using `npm install`
 add the geolocation plugin
 ionic cordova plugin add cordova-plugin-geolocation
-
-install above plugin
 npm install --save @ionic-native/geolocation
+
+### Screenshots
+![Screenshot](https://i.imgur.com/XLendwE.png)
+
+