Adding StackWidget sample code

Change-Id: I4c469f25147f733a3a09cdea0db407cd4e9f62ca
diff --git a/Android.mk b/Android.mk
index 18e0963..953c35d 100644
--- a/Android.mk
+++ b/Android.mk
@@ -427,6 +427,8 @@
 		            resources/samples/Spinner "Spinner" \
 		-samplecode $(sample_dir)/SpinnerTest \
 		            resources/samples/SpinnerTest "SpinnerTest" \
+		-samplecode $(sample_dir)/StackWidget \
+		            resources/samples/StackWidget "StackWidget" \
 		-samplecode $(sample_dir)/TicTacToeLib  \
 		            resources/samples/TicTacToeLib "TicTacToeLib" \
 		-samplecode $(sample_dir)/TicTacToeMain \