Adding CrossCompatibility sample app.

Change-Id: I565584ea53212f61a9fbbb44e50da59f4ba06fff
diff --git a/build/sdk.atree b/build/sdk.atree
index eda4256..75e827a 100644
--- a/build/sdk.atree
+++ b/build/sdk.atree
@@ -109,6 +109,7 @@
 development/samples/VoiceRecognitionService  samples/${PLATFORM_NAME}/VoiceRecognitionService
 development/samples/TicTacToeLib             samples/${PLATFORM_NAME}/TicTacToeLib
 development/samples/TicTacToeMain            samples/${PLATFORM_NAME}/TicTacToeMain
+development/samples/CrossCompatibility       samples/${PLATFORM_NAME}/CrossCompatibility
 
 # dx
 bin/dx platforms/${PLATFORM_NAME}/tools/dx