📖 readString usage

Author: Bunlong

README.md

@@ -20,6 +20,22 @@ react-native-csv is available on yarn as well. It can be installed with the foll
 yarn add react-native-csv --save
 ```
 
+## 💡 Usage
+
+### 🎀 readString
+
+```javascript
+import { readString } from 'react-native-csv';
+
+const str = `Column 1,Column 2,Column 3,Column 4
+1-1,1-2,1-3,1-4
+2-1,2-2,2-3,2-4
+3-1,3-2,3-3,3-4
+4,5,6,7`;
+
+const results = readString(str);
+```
+
 ## Contributing
 
 See the [contributing guide](CONTRIBUTING.md) to learn how to contribute to the repository and the development workflow.