Merge pull request #16 from johelder/feature/snack

add snack demo on readme

Author: johelder

README.md

@@ -4,6 +4,12 @@ react-native-input-code-otp is a high-performance and fully customizable OTP inp
 
 ![Presentation Image](./.github/assets/react-native-input-code-otp.png)
 
+## Demo
+
+Try it on Snack Expo:
+
+[![Snack Expo App](https://img.shields.io/badge/Snack-fff.svg?style=for-the-badge&logo=EXPO&labelColor=000&logoColor=FFF)](https://snack.expo.dev/@anday013/demo-react-native-otp-entry)
+
 ## Installation
 
 ```sh