Add CODE_OF_CONDUCT.md (#26)

Author: acezen

CODE_OF_CONDUCT.md

@@ -0,0 +1,19 @@
+<!---
+Copyright 2022 Alibaba Group Holding Limited.
+
+Licensed 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.
+-->
+
+# GraphAr Community Code of Conduct
+
+GraphAr follows the [The Apache Software Foundation Code of Conduct](https://www.apache.org/foundation/policies/conduct.html).

CONTRIBUTING.rst

@@ -7,6 +7,8 @@ GraphAr is an open source project and we love to receive contributions from our
 There are many ways to contribute, from improving the documentation, submitting bug reports and
 feature requests or writing code which can be incorporated into GraphAr itself.
 
+Note that no matter how you contribute, your participation is governed by our `Code of Conduct`_.
+
 Reporting bug
 -------------------
 
@@ -31,7 +33,7 @@ Support questions
 -----------------
 If you have a general question about GraphAr, please don't use the issue tracker for that.
 The issue tracker is a tool to address bugs and feature requests in GraphAr itself.
-Use our `Github Discussions`_. for questions about using GraphAr or issues with your own code:
+Use our `Github Discussions`_ for questions about using GraphAr or issues with your own code:
 
 
 Contributing code and documentation changes
@@ -210,6 +212,8 @@ not land, the submitters should come away from the experience feeling like their
 effort was not wasted or unappreciated. Every pull request from a new contributor
 is an opportunity to grow the community.
 
+.. _Code of Conduct: https://github.com/alibaba/GraphAr/blob/main/CODE_OF_CONDUCT.md
+
 .. _file an bug issue: https://github.com/alibaba/GraphAr/issues/new?assignees=&labels=Bug&template=bug_report.yml&title=%5BBug%5D%3A+%3Ctitle%3E
 
 .. _Open an feature request issue: https://github.com/alibaba/GraphAr/issues/new?assignees=&labels=enhancement&template=feature_request.md&title=%5BFeat%5D