add publish script
diff --git a/publish.sh b/publish.sh
new file mode 100755
index 0000000..39f914c
--- /dev/null
+++ b/publish.sh
@@ -0,0 +1,39 @@
+#!/usr/bin/env bash
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to you under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+set -e
+
+rm -rf content
+bundle exec jekyll clean
+bundle exec jekyll build -d content
+
+COMMIT_HASH=`git rev-parse HEAD`
+git checkout asf-site
+
+git pull --rebase
+git add content
+echo "Publishing changes from master branch $COMMIT_HASH"
+git commit -a -m "Publishing from $COMMIT_HASH"
+echo " "
+echo "==================================================================="
+echo "You are now on the asf-site branch with your new changes committed."
+echo " git push the 'asf-site' branch upstream to update the live site."
+echo "==================================================================="
+echo " "
+
+set +e
