Add two screenshots to show column num options

Author: AmrDeveloper

README.md

@@ -9,7 +9,7 @@ Android Library to make it easy to add ReactButton feature in your app with Mult
 #### Demo :smile:
 
 <p align="center">
-<img src="/screenshots/facebook_reacts_demo.gif" height="400px" width="25%"> <img src="/screenshots/dc_reacts_demo.gif" height="400px" width="25%"> <img src="/screenshots/facebook_reacts_portal.png" height="400px" width="25%">
+<img src="/screenshots/facebook_reacts_demo.gif" height="400px" width="22%"> <img src="/screenshots/dc_reacts_demo.gif" height="400px" width="22%"> <img src="/screenshots/facebook_reacts_2c.png" height="400px" width="22%"> <img src="/screenshots/facebook_reacts_3c.png" height="400px" width="22%">
 </p>
 
 <p align="center">