minor example update

Author: vonovak

example/navbar-buttons-demo/package.json

@@ -7,6 +7,6 @@
     "react-native": "https://github.com/expo/react-native/archive/sdk-25.0.0.tar.gz",
     "react-native-platform-touchable": "^1.1.1",
     "react-navigation": "^1.0.0-beta.27",
-    "react-navigation-header-buttons": "^0.0.4"
+    "react-navigation-header-buttons": "file:../.."
   }
 }

example/navbar-buttons-demo/screens/UsageWithIcons.js

@@ -11,8 +11,12 @@ export class UsageWithIcons extends React.Component {
     title: 'Usage With Icons',
     headerRight: (
       <HeaderButtons IconComponent={Ionicons} iconSize={23} color="blue">
-        <HeaderButtons.Item title="add" iconName="ios-search" onPress={() => console.warn('add')} />
-        <HeaderButtons.Item title="select" onPress={() => console.warn('edit')} />
+        <HeaderButtons.Item
+          title="search"
+          iconName="ios-search"
+          onPress={() => console.warn('search')}
+        />
+        <HeaderButtons.Item title="select" onPress={() => console.warn('select')} />
       </HeaderButtons>
     ),
   };
@@ -21,8 +25,8 @@ export class UsageWithIcons extends React.Component {
     const text = `
     headerRight: (
       <HeaderButtons IconComponent={Ionicons} iconSize={23} color="blue">
-        <HeaderButtons.Item title="add" iconName="ios-search" onPress={() => console.warn('add')} />
-        <HeaderButtons.Item title="select" onPress={() => console.warn('edit')} />
+        <HeaderButtons.Item title="search" iconName="ios-search" onPress={() => console.warn('search')} />
+        <HeaderButtons.Item title="select" onPress={() => console.warn('select')} />
       </HeaderButtons>
     ),
     `;

example/navbar-buttons-demo/screens/UsageWithOverflow.js

@@ -10,7 +10,11 @@ export class UsageWithOverflow extends React.Component {
     title: 'Usage With Overflow',
     headerRight: (
       <HeaderButtons IconComponent={MaterialIcons} iconSize={23} color="blue">
-        <HeaderButtons.Item title="person" iconName="person" onPress={() => console.warn('add')} />
+        <HeaderButtons.Item
+          title="person"
+          iconName="person"
+          onPress={() => console.warn('person')}
+        />
         <HeaderButtons.Item title="edit" show="never" onPress={() => console.warn('edit')} />
       </HeaderButtons>
     ),
@@ -20,7 +24,7 @@ export class UsageWithOverflow extends React.Component {
     const text = `
     headerRight: (
       <HeaderButtons IconComponent={MaterialIcons} iconSize={23} color="blue">
-        <HeaderButtons.Item title="person" iconName="person" onPress={() => console.warn('add')} />
+        <HeaderButtons.Item title="person" iconName="person" onPress={() => console.warn('person')} />
         <HeaderButtons.Item title="edit" show="never" onPress={() => console.warn('edit')} />
       </HeaderButtons>
     ),