Update README (#82)

* Update README

* Add info on Community channels (google group, chats)
* Restructure main section on background and core team

* Fix typos and add CODEOWNERS

* Rename CODEOWNERS to MAINTAINERS

This includes all team members, not just engineers, and we are already
tracking code owner engineers under .github/CODEOWNERS

* Add link to and explanation of CODEOWNERS

Co-authored-by: Shelby Switzer <shelby.switzer@cms.hhs.gov>

MAINTAINERS.md

@@ -0,0 +1,9 @@
+Shelby Switzer - switzersc-usds
+Nat Hillard - NatHillardUSDS
+Jorge Escobar - esfoobar-usds
+Lucas Brown - lucasmbrown-usds
+Tom Nielsen - TomNUSDS
+Katherine Mlkia - katherinedm-usds
+Kameron Kerger - KameronKerger
+Jane Lien - janelien
+Beth Mattern - BethMattern

README.md

@@ -2,15 +2,40 @@
 # Justice40 Tool
 [![CC0 License](https://img.shields.io/badge/license-CCO--1.0-brightgreen)](https://github.com/usds/justice40-tool/blob/main/LICENSE)
 
-This repo contains the code for the working prototype and soon to be MVP of the Justice40 Climate, Environmental, and Economic Justice Screeing Tool. The Justice40 initiative and screening tool were announced in an [Executive Order](https://www.whitehouse.gov/briefing-room/presidential-actions/2021/01/27/executive-order-on-tackling-the-climate-crisis-at-home-and-abroad/) in January 2021, with the goal to launch an MVP of the tool by July 27, 2021. This tool will include interactive maps and an initial draft scorecard by which federal agencies can identify historically overburdened and underserved communities for benefits in their programs.
+Welcome to the Justice40 Open Source Community! This repo contains the code, processes, and documentation for the data and tech powering the Justice40 Climate and Economic Justice Screening Tool (CEJST).
 
-The Justice40 team is taking a community-first and open source approach to the product development of this tool. We encourage contributions in the form of discussion on issues in this repo and pull requests of documentation and code. Please see the [Contributing](#Contributing) section for more information.
+## Background
+The Justice40 initiative and screening tool were announced in an [Executive Order](https://www.whitehouse.gov/briefing-room/presidential-actions/2021/01/27/executive-order-on-tackling-the-climate-crisis-at-home-and-abroad/) in January 2021, with the goal to launch an MVP of the tool by July 27, 2021. This tool will include interactive maps and an initial draft scorecard which federal agencies can use to prioritize historically overburdened and underserved communities for benefits in their programs.
+
+## Core team
+The core Justice40 team building this tool is a small group of designers, developers, and product managers from the US Digital Service in partnership with the Council on Environmental Quality (CEQ). 
+
+An up-to-date list of core team members can be found in [MAINTAINERS.md](MAINTAINERS.md). The engineering members of the core team who maintain the code in this repo are listed in [.github/CODEOWNERS](.github/CODEOWNERS).
+
+## Community
+The Justice40 team is taking a community-first and open source approach to the product development of this tool. We believe government software should be made in the open and be built and licensed such that anyone can take the code, run it themselves without paying money to third parties or using proprietary software, and use it as they will. 
+
+We know that we can learn from a wide variety of communities, including those who will use or will be impacted by the tool, who are experts in data science or technology, or who have experience in climate, economic,or environmental justice work. We are dedicated to creating forums for continuous conversation and feedback to help shape the design and development of the tool. 
+
+We also recognize capacity building as a key part of involving a diverse open source community. We are doing our best to use accessible language, provide technical and process documents in multiple languages, and offer support to our community members of a wide variety of background and skillsets, directly or in the form of group chats and training. If you have ideas for how we can improve or add to our capacity building efforts and methods for welcoming folks into our community, please let use know in the [Google Group](https://groups.google.com/u/4/g/justice40-open-source) or email us at justice40open@usds.gov.
+
+### Community Chats
+We host open source community chats every two weeks on Monday at 5-6pm ET. You can find information about the agenda and how to participate in our [Google Group](https://groups.google.com/u/4/g/justice40-open-source).
+
+Community members are welcome to share updates or propose topics for discussion in community chats. Please do so in the Google Group.
+
+### Google Group
+Our [Google Group](https://groups.google.com/u/4/g/justice40-open-source) is open to anyone to join and share their knowledge or experiences, as well as to ask questions of the core Justice40 team or the wider community. 
+
+The core team uses the group to post updates on the program and tech/data issues, and to share the agenda and call for community participation in the community chat.
+
+Curious about whether to ask a question here as a Github issue or in the Google Group? The general rule of thumb is that issues are for actionable topics related to the tool or data itself (e.g. questions about a specific data set in use, or suggestion for a new tool feature), and the Google Group is for more general topics or questions. If you can't decide, use the google group and we'll discuss there before moving to Github if appropriate! 
 
 ## Contributing
 
-Contributions are always welcome!
+Contributions are always welcome! We encourage contributions in the form of discussion on issues in this repo and pull requests of documentation and code. 
 
-See `CONTRIBUTING.md` for ways to get started.
+See [CONTRIBUTING.md](CONTRIBUTING.md) for ways to get started.
 
 ## Glossary