Update README.md

Author: Achintya999

README.md

@@ -5,4 +5,6 @@ A simple Google Maps Android API v2 Demo app. This app helps us test if we have
 
 <img src="http://i.imgur.com/3KFfS9G.png" width="350" />
 
+The Google Maps Api helps us to lay down the map into our Android App. It can have different types of map like satellite, terrain and many more. Adding these features on the map helps us to add cool features to our app and make our app able to guide to places to which the user wants.
+
 Make sure that you've setup your Android API key (com.google.android.maps.v2.API_KEY) in manifests/AndroidManifest.xml!  Otherwise, you may not find the maps rendering.