Add StartActivity - landing page of baby monitor

The StartActivity is the first activity which will be launched
in the baby monitor, and in the future will list the two main
options: become a monitor or a listener.

res/menu/start.xml

@@ -0,0 +1,11 @@
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    tools:context="gpl.babymonitor.StartActivity" >
+
+    <item
+        android:id="@+id/action_settings"
+        android:orderInCategory="100"
+        android:showAsAction="never"
+        android:title="@string/action_settings"/>
+
+</menu>