Add hello spell checker sample client app

Bug: 4973788

Change-Id: I938ba499c35d91f2e9dbcd00ae0df64c999b2b95
diff --git a/samples/SpellChecker/Android.mk b/samples/SpellChecker/Android.mk
new file mode 100644
index 0000000..5053e7d
--- /dev/null
+++ b/samples/SpellChecker/Android.mk
@@ -0,0 +1 @@
+include $(call all-subdir-makefiles)