bigview support for android

Thanks to #92 and #114

src/android/Receiver.java

@@ -116,6 +116,7 @@ public class Receiver extends BroadcastReceiver {
     /**
      * Erstellt die Notification.
      */
+    @SuppressLint("NewApi")
 	private Builder buildNotification () {
         Bitmap icon = BitmapFactory.decodeResource(context.getResources(), options.getIcon());
         Uri sound   = options.getSound();
@@ -134,6 +135,11 @@ public class Receiver extends BroadcastReceiver {
         	notification.setSound(sound);
         }
 
+        if (Build.VERSION.SDK_INT > 16) {
+        	notification.setStyle(new Notification.BigTextStyle()
+        		.bigText(options.getMessage()));
+        }
+        
         setClickEvent(notification);
 
         return notification;