Add license type: variety of NOTICE licenses am: 024572bc81 am: c8c1424155 am: d985e31d24 am: 789bfd6dce

Change-Id: I63fe1560a858f62c66cde7681ae2b1b6bd75629a
diff --git a/METADATA b/METADATA
index 016eef2..17debe1 100644
--- a/METADATA
+++ b/METADATA
@@ -12,5 +12,6 @@
     value: "https://github.com/google/styleguide.git"
   }
   version: "58e2a524cd806488709ff0af5445c4225d655e24"
+  license_type: NOTICE
   last_upgrade_date { year: 2017 month: 11 day: 10 }
 }