Update README.md

Author: alvaromb

README.md

@@ -1,2 +1,19 @@
 # react-native-keyboard-aware-scroll-view
-A ScrollView component that handles keyboard appearance
+A ScrollView component that handles keyboard appearance.
+
+## Usage
+Import ``react-native-keyboard-aware-scroll-view`` and wrap your content inside it:
+
+```jsx
+<KeyboardAwareScrollView>
+  <View>
+    <Text>Hello world!</Text>
+  </View>
+</KeyboardAwareScrollView>
+```
+
+The component accepts three props, ``style``, ``children`` (the children node to render inside) and the experimental prop ``viewIsInsideTabBar``, which tries to solve resizing issues when rendering inside a ``TabBar`` component.
+
+## License
+
+MIT.