Support sentence level spell check in sample code of the spell checker

Bug: 6136149

Change-Id: I1519258dd3ce95ad01e50a75f802469737bef3c4
diff --git a/samples/SpellChecker/HelloSpellChecker/Android.mk b/samples/SpellChecker/HelloSpellChecker/Android.mk
index 1c76f23..5138ce9 100755
--- a/samples/SpellChecker/HelloSpellChecker/Android.mk
+++ b/samples/SpellChecker/HelloSpellChecker/Android.mk
@@ -5,6 +5,7 @@
 
 LOCAL_SRC_FILES := $(call all-subdir-java-files)
 
+# TODO: Change sdk version to 16
 LOCAL_SDK_VERSION := current
 
 LOCAL_PACKAGE_NAME := HelloSpellChecker