Add things for ASF release

- Ignore `.asf-release`
- Add `.npmrc`

.gitignore

@@ -28,3 +28,7 @@ Thumbs.db
 *.user
 
 node_modules
+
+# ASF release workspace
+.asf-release/
+!.asf-release/.gitkeep

.npmignore

@@ -17,3 +17,6 @@
 
 .*
 tests
+
+# ASF release workspace
+.asf-release/

.npmrc

@@ -0,0 +1,23 @@
+# 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.
+
+registry=https://registry.npmjs.org
+
+# ASF release settings
+git-tag-version=false
+preid=dev
+pack-destination=./.asf-release