Use the feature list for the SDK.

Change-Id: I926a682ac23a373276d10223af9f1e47ebc617d0
diff --git a/build/sdk.atree b/build/sdk.atree
index f03d354..e78c52e 100644
--- a/build/sdk.atree
+++ b/build/sdk.atree
@@ -194,6 +194,7 @@
 docs/service_actions.txt platforms/${PLATFORM_NAME}/data/service_actions.txt
 docs/categories.txt platforms/${PLATFORM_NAME}/data/categories.txt
 docs/widgets.txt platforms/${PLATFORM_NAME}/data/widgets.txt
+docs/features.txt platforms/${PLATFORM_NAME}/data/features.txt
 framework/layoutlib.jar platforms/${PLATFORM_NAME}/data/layoutlib.jar
 
 # framework resources for layoutlib