update submodule

zaggino · zaggino · commit 75c76142030c · 2015-08-13T09:18:15.000+10:00
diff --git a/json-schema b/json-schema
@@ -1 +1 @@
-Subproject commit cc8ec81ce0abe2385ebd6c2a6f2d6deb646f874a
+Subproject commit 472c32b8c3c3a69c0db00b66b53ebd6977e4cc8b
