updated README

app/src/main/res/layout/activity_main.xml

@@ -1,21 +1,24 @@
 <?xml version="1.0" encoding="utf-8"?>
-<RelativeLayout
-    xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools"
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
-    android:layout_height="match_parent">
+    android:layout_height="match_parent"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
 
     <android.support.v7.widget.Toolbar
         android:id="@+id/toolbar"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
+        app:titleTextColor="@android:color/white"
         android:background="@color/colorPrimary"/>
 
-    <View
+    <TextView
         android:id="@+id/swipable"
         android:background="#333"
         android:layout_below="@+id/display"
         android:layout_width="match_parent"
+        android:text="this view is swipable"
+        android:gravity="center"
+        android:textColor="#AFFF"
         android:layout_height="200dp"
         android:layout_margin="50dp" />
 
@@ -24,5 +27,6 @@
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_centerInParent="true"
-        android:text="Display"/>
+        android:text="Display the showcase !"/>
+
 </RelativeLayout>

app/src/main/res/values/styles.xml

@@ -6,6 +6,9 @@
         <item name="colorPrimary">@color/colorPrimary</item>
         <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
         <item name="colorAccent">@color/colorAccent</item>
+
+        <item name="actionMenuTextColor">@android:color/white</item>
+
     </style>
 
 </resources>