add settings button to left button

Author: drewvolz

source/views/components/nav-buttons/open-settings.js

@@ -22,7 +22,7 @@ export function OpenSettingsButton({
       borderless
       highlight={false}
       style={[styles.button, buttonStyle]}
-      onPress={() => navigation.push('SettingsView')}
+      onPress={() => navigation.navigate('SettingsView')}
     >
       <Icon style={styles.icon} name="ios-settings" />
     </Touchable>

source/views/home/home.js

@@ -16,6 +16,7 @@ import {allViews} from '../views'
 import {HomeScreenButton, CELL_MARGIN} from './button'
 import {trackedOpenUrl} from '../components/open-url'
 import {EditHomeButton} from '../components/nav-buttons'
+import {OpenSettingsButton} from '../components/nav-buttons'
 
 function HomePage({
   navigation,
@@ -55,6 +56,7 @@ HomePage.navigationOptions = ({navigation}) => {
     title: 'All About Olaf',
     headerBackTitle: 'Home',
     headerRight: <EditHomeButton navigation={navigation} />,
+    headerLeft: <OpenSettingsButton navigation={navigation} />,
   }
 }