Fix layout on chart view

components/chart/chart.js

@@ -1,5 +1,5 @@
 import React, { Component } from 'react'
-import { View, FlatList } from 'react-native'
+import { View, FlatList, ScrollView } from 'react-native'
 import range from 'date-range'
 import { LocalDate } from 'js-joda'
 import { yAxis, normalizeToScale, horizontalGrid } from './y-axis'
@@ -41,6 +41,7 @@ export default class CycleChart extends Component {
 
   render() {
     return (
+      <ScrollView>
         <View style={{ flexDirection: 'row', marginTop: 50 }}>
           {yAxisView}
           {horizontalGrid}
@@ -56,6 +57,7 @@ export default class CycleChart extends Component {
           >
           </FlatList>}
         </View>
+      </ScrollView>
     )
   }
 }