Added theme

DemoAndroid/Resources/layout/activity_wakeonlan.xml

@@ -2,18 +2,19 @@
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
               android:orientation="vertical"
               android:layout_width="match_parent"
-              android:layout_height="match_parent">
+              android:layout_height="match_parent"
+              android:layout_margin="5pt">
 
     <TextView android:layout_width="match_parent"
               android:layout_height="wrap_content"
-              android:text="Start PC by tapping button below" />
+              android:text="Start de computer met Wake-On-Lan door op de knop hieronder te klikken" />
 
     <Button android:id="@+id/btnWakeOnLan"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:text="Start PC"
+            android:text="Start de computer"
             android:textColor="@color/white"
-            android:background="@color/blue"
-            android:height="15pt"
+            android:background="@color/green"
+            android:height="20pt"
             android:layout_margin="10pt"/>
 </LinearLayout>

DemoAndroid/Resources/values/colors.xml

@@ -2,4 +2,5 @@
 <resources>
     <color name="blue">#4287f5</color>
     <color name="white">#FFFFFF</color>
+    <color name="green">#2abf39</color>
 </resources>

DemoAndroid/Resources/values/strings.xml

@@ -1,4 +1,4 @@
 <resources>
-    <string name="app_name">DemoAndroid</string>
+    <string name="app_name">Start computer</string>
     <string name="app_text">Hello, Android!</string>
 </resources>

DemoAndroid/Resources/values/style.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <style name="NoActionBar" parent="@android:style/Theme.Material.Light.DarkActionBar">
+        <item name="android:windowActionBar">false</item>
+        <item name="android:windowNoTitle">true</item>
+        <item name="android:windowFullscreen">true</item>
+    </style>
+</resources>