Fix echarts overflow on Android

src/components/Echarts/index.js

@@ -21,7 +21,7 @@ export default class App extends Component {
             height: this.props.height || 400,
             backgroundColor: this.props.backgroundColor || 'transparent'
           }}
-          scalesPageToFit={false}          
+          scalesPageToFit={true}
           source={require('./tpl.html')}
           onMessage={event => this.props.onPress ? this.props.onPress(JSON.parse(event.nativeEvent.data)) : null}
         />