Rename screen in navigtor

app.js

@@ -2,7 +2,7 @@ import { createStackNavigator } from 'react-navigation'
 import Home from './home'
 
 import Calendar from './calendar'
-import Day from './cycle-day'
+import CycleDay from './cycle-day'
 
 // this is until react native fixes this bug, see https://github.com/facebook/react-native/issues/18868#issuecomment-382671739
 import { YellowBox } from 'react-native'
@@ -11,5 +11,5 @@ YellowBox.ignoreWarnings(['Warning: isMounted(...) is deprecated'])
 export default createStackNavigator({
   home: { screen: Home },
   calendar: { screen: Calendar },
-  day: { screen: Day }
+  cycleDay: { screen: CycleDay }
 })