<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    tools:context="info.hoang8f.lvbutton.demo.MainActivity" >
    
    <item android:id="@+id/action_settings"
        android:title="@string/action_settings"
        android:orderInCategory="100"
        app:showAsAction="never" />
</menu>

<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    tools:context="info.hoang8f.fbutton.demo.MainActivity">

    <item
        android:id="@+id/action_github"
        android:title="@string/action_github"
        android:icon="@drawable/ic_github_dark"
        android:orderInCategory="100"
        app:showAsAction="always|withText" />

</menu>

Change menu action for github
Change menu action for github
