Add AcceleromerPlay sample app to SDK samples package

Change-Id: Id7ae8de4f3543169d6d707a470f0b872e00e953f
diff --git a/build/sdk.atree b/build/sdk.atree
index 37c67a3..deec35e 100644
--- a/build/sdk.atree
+++ b/build/sdk.atree
@@ -146,6 +146,7 @@
 # PLEASE KEEP THE SAMPLES IN ALPHABETICAL ORDER.
 #
 development/samples/AccessibilityService     samples/${PLATFORM_NAME}/AccessibilityService
+development/samples/AccelerometerPlay        samples/${PLATFORM_NAME}/AccelerometerPlay
 development/samples/ApiDemos                 samples/${PLATFORM_NAME}/ApiDemos
 development/samples/BackupRestore            samples/${PLATFORM_NAME}/BackupRestore
 development/samples/BluetoothChat            samples/${PLATFORM_NAME}/BluetoothChat