feat: add library banner to readme

Author: virajpsimformsolutions

README.md

@@ -1,3 +1,5 @@
+![Audio Waveform - Simform](./assets/react_native_audiowave.gif)
+
 # react-native-audio-waveform
 
 [![react-native-audio-waveform on npm](https://img.shields.io/npm/v/react-native-audio-waveform.svg?&logo=npm&logoColor=white&color=red&labelColor=grey&cacheSeconds=3600&maxAge=86400)](https://www.npmjs.com/package/react-native-audio-waveform) [![react-native-audio-waveform downloads](https://img.shields.io/npm/dm/react-native-audio-waveform?&logo=npm&logoColor=white&color=blue&labelColor=grey&cacheSeconds=3600&maxAge=86400)](https://www.npmtrends.com/react-native-audio-waveform) [![react-native-audio-waveform install size](https://packagephobia.com/badge?p=react-native-audio-waveform?&icon=disk&logoColor=white&color=yellow&labelColor=grey&cacheSeconds=3600&maxAge=86400)](https://packagephobia.com/result?p=react-native-audio-waveform) [![Android](https://img.shields.io/badge/Platform-Android-green?logo=android&logoColor=white&labelColor=grey)](https://www.android.com) [![iOS](https://img.shields.io/badge/Platform-iOS-green?logo=apple&logoColor=white&labelColor=grey)](https://developer.apple.com/ios) [![MIT](https://img.shields.io/badge/License-MIT-green&labelColor=grey)](https://opensource.org/licenses/MIT)