chore: CCIE-4984 conform to open sourcing guidelines

Trademark

LICENSE

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+The MIT License (MIT)
+
+Copyright (c) 2017-2023 Chan Zuckerberg Initiative
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

README.md

@@ -82,6 +82,13 @@ extension could be directly contributed, which would make it available for a wid
 
 See the [CELLxGENE extensions](https://github.com/chanzuckerberg/cellxgene-documentation/blob/main/community-extensions.md) section of our documentation for examples of community use and CELLxGENE extensions.
 
+### Trademarks
+
+CZ CELLXGENE, CZ CELLXGENE DISCOVER, and CZ CELLXGENE ANNOTATE are trademarks of the Chan Zuckerberg Initiative. All rights reserved.
+
+Use, reuse, modification, and re-distribution of the source code in this repository is subject to the terms of the applicable open source [license](LICENSE.txt). However, that license does not grant permission to use the trademarks without separate, express permission from the Chan Zuckerberg Initiative.
+
+
 ### Security
 
 If you believe you have found a security issue, we would appreciate notification. Please send email to <security@chanzuckerberg.com>.

SECURITY.md

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+## Reporting Security Issues
+If you believe you have found a security issue, please responsibly disclose by contacting us at [security@chanzuckerberg.com](mailto:security@chanzuckerberg.com).