Add Gerrit-PluginName in BUCK file

Change-Id: I3acd6b60fd59d2ab980fdbc5775fa9eb6bc7dbc2
diff --git a/BUCK b/BUCK
index 9b7fa54..b766ae2 100644
--- a/BUCK
+++ b/BUCK
@@ -3,6 +3,7 @@
   srcs = glob(['src/main/java/**/*.java']),
   resources = glob(['src/main/resources/**/*']),
   manifest_entries = [
+    'Gerrit-PluginName: reviewnotes',
     'Gerrit-Module: com.googlesource.gerrit.plugins.reviewnotes.ReviewNotesModule',
     'Gerrit-SshModule: com.googlesource.gerrit.plugins.reviewnotes.SshModule'
   ]