Update README.md

Author: anuneetanand

README.md

@@ -1,7 +1,9 @@
 # Active Learning and Teaching App :iphone:
 An open source mobile application to facilitate teaching and learning.
 
-## Build :wrench:
+<img width="731" alt="Screenshot 2021-04-30 at 18 16 51" src="https://user-images.githubusercontent.com/42066451/116697230-8e4b4c80-a9e0-11eb-860d-6fca12a876f5.png">
+
+## Build :gear:
 
 - Clone the repository
 - Place **config.json** in App/
@@ -10,3 +12,4 @@ An open source mobile application to facilitate teaching and learning.
 - **iOS:** `react-native run-ios`  
 - **Android:** `react-native run-android`
 
+