Include a local manifest to define an entry point.

Change-Id: I0b07b1391620744d8eab9726f7e2a814418c8056
diff --git a/MANIFEST.MF b/MANIFEST.MF
new file mode 100644
index 0000000..4a98bc8
--- /dev/null
+++ b/MANIFEST.MF
@@ -0,0 +1,3 @@
+Manifest-Version: 1.0
+Created-By: 1.6.0 (Sun Microsystems Inc.)
+Main-Class: com.android.accessibility.AccessibilityValidator