Use modern JS/React syntax for the example usage

README.md

@@ -32,47 +32,41 @@ npm i --save react-native-slider
 ## Usage
 
 ```jsx
-'use strict';
+import React from "react";
+import Slider from "react-native-slider";
+import { AppRegistry, StyleSheet, View, Text } from "react-native";
 
-var React = require('react');
-var Slider = require('react-native-slider');
-var {
-  AppRegistry,
-  StyleSheet,
-  View,
-  Text,
-} = require('react-native');
-
-var SliderExample = React.createClass({
-  getInitialState() {
-    return {
-      value: 0.2,
-    };
-  },
+class SliderExample extends React.Component {
+  state = {
+    value: 0.2
+  };
 
   render() {
     return (
       <View style={styles.container}>
         <Slider
           value={this.state.value}
-          onValueChange={(value) => this.setState({value})} />
-        <Text>Value: {this.state.value}</Text>
+          onValueChange={value => this.setState({ value })}
+        />
+        <Text>
+          Value: {this.state.value}
+        </Text>
       </View>
     );
   }
-});
+}
 
-var styles = StyleSheet.create({
+const styles = StyleSheet.create({
   container: {
     flex: 1,
     marginLeft: 10,
     marginRight: 10,
-    alignItems: 'stretch',
-    justifyContent: 'center',
-  },
+    alignItems: "stretch",
+    justifyContent: "center"
+  }
 });
 
-AppRegistry.registerComponent('SliderExample', () => SliderExample);
+AppRegistry.registerComponent("SliderExample", () => SliderExample);
 ```
 
 ## Props