[DOCS] Readme updated according OEP-55 (openedx#141)

* docs: readme updated with frontend-template-app readme ref
* fix: change main branch to master, spelling and getting help url

README.rst

@@ -1,45 +1,48 @@
-|Codecov| |license|
-
-.. |codecov| image:: https://codecov.io/gh/edx/frontend-app-learning/branch/master/graph/badge.svg?token=3z7XvuzTq3
-   :target: https://codecov.io/gh/edx/frontend-app-communications
-.. |license| image:: https://img.shields.io/badge/license-AGPL-informational
-   :target: https://github.com/edx/frontend-app-account/blob/master/LICENSE
-
 frontend-app-communications
-==============================
+#############################
 
-Please tag **edx-aperture** on any PRs or issues.  Thanks!
+|license-badge| |status-badge| |ci-badge| |codecov-badge|
 
-Introduction
-------------
 
-A tool used by course teams to communicate with thier learners. The interface for anything related to instructor to learner communications. Instructor bulk email, for example.
+Purpose
+*******
 
+A tool used by course teams to communicate with their learners. The interface for anything related to instructor to learner communications. Instructor bulk email, for example.
 
 Getting started
 ------------
 
 For now, this repo is not intergrated with devstack. You'll be running the app locally and not through docker. This does make setup a little easier.
 
-1. Clone the repo into your usual workspace
+Cloning and Startup
+===================
 
-   .. code-block::
+   1. Clone your new repo:
 
-      mkdir -p ~/workspace/
-      cd ~/workspace/
-      git clone https://github.com/edx/frontend-app-communications.git
+   ``git clone https://github.com/edx/frontend-app-communications.git``
 
-2. Install frontend dependencies
+   2. Use node v18.x.
 
-   .. code-block::
+      The current version of the micro-frontend build scripts support node 18.
+      Using other major versions of node *may* work, but this is unsupported.  For
+      convenience, this repository includes an .nvmrc file to help in setting the
+      correct node version via `nvm <https://github.com/nvm-sh/nvm>`_.
 
-      npm i
+   3. Install npm dependencies:
 
-3. Start the devserver. The app will be running at ``localhost:1984``, or whatever port you change it too.
+   ``cd frontend-app-communications && npm install``
 
-   .. code-block::
+   4. Update the application port to use for local development:
+
+      Default port is 1984. If this does not work for you, update the line
+      `PORT=1984` to your port in all .env.* files
+
+   5. Start the devserver. The app will be running at ``localhost:1984``, or whatever port you change it too.
+
+      .. code-block::
+
+         npm start
 
-      npm start
 
 Environment Variables/Setup Notes
 ---------------------------------
@@ -65,3 +68,96 @@ Tests use `jest` and `react-test-library`. To run all the tests for this repo:
    .. code-block::
 
       npm test
+
+
+**Production Build**
+
+The production build is created with ``npm run build``.
+
+Internationalization
+====================
+
+Please see refer to the `frontend-platform i18n howto`_ for documentation on
+internationalization.
+
+.. _frontend-platform i18n howto: https://github.com/openedx/frontend-platform/blob/master/docs/how_tos/i18n.rst
+
+Getting Help
+************
+
+If you're having trouble, we have discussion forums at
+https://discuss.openedx.org where you can connect with others in the community.
+
+Our real-time conversations are on Slack. You can request a `Slack
+invitation`_, then join our `community Slack workspace`_.  Because this is a
+frontend repository, the best place to discuss it would be in the `#wg-frontend
+channel`_.
+
+For anything non-trivial, the best path is to open an issue in this repository
+with as many details about the issue you are facing as you can provide.
+
+https://github.com/openedx/frontend-app-communications/issues
+
+For more information about these options, see the `Getting Help`_ page.
+
+.. _Slack invitation: https://openedx.org/slack
+.. _community Slack workspace: https://openedx.slack.com/
+.. _#wg-frontend channel: https://openedx.slack.com/archives/C04BM6YC7A6
+.. _Getting Help: https://openedx.org/community/connect
+
+License
+*******
+
+The code in this repository is licensed under the AGPLv3 unless otherwise
+noted.
+
+Please see `LICENSE <LICENSE>`_ for details.
+
+Contributing
+************
+
+Contributions are very welcome.  Please read `How To Contribute`_ for details.
+
+.. _How To Contribute: https://openedx.org/r/how-to-contribute
+
+This project is currently accepting all types of contributions, bug fixes,
+security fixes, maintenance work, or new features.  However, please make sure
+to have a discussion about your new feature idea with the maintainers prior to
+beginning development to maximize the chances of your change being accepted.
+You can start a conversation by creating a new issue on this repo summarizing
+your idea.
+
+The Open edX Code of Conduct
+****************************
+
+All community members are expected to follow the `Open edX Code of Conduct`_.
+
+.. _Open edX Code of Conduct: https://openedx.org/code-of-conduct/
+
+People
+******
+
+The assigned maintainers for this component and other project details may be
+found in `Backstage`_. Backstage pulls this data from the ``catalog-info.yaml``
+file in this repo.
+
+.. _Backstage: https://open-edx-backstage.herokuapp.com/catalog/default/component/frontend-app-communications
+
+Reporting Security Issues
+*************************
+
+Please do not report security issues in public, and email [email protected] instead.
+
+.. |license-badge| image:: https://img.shields.io/github/license/openedx/frontend-app-communications.svg
+    :target: https://github.com/openedx/frontend-app-communications/blob/master/LICENSE
+    :alt: License
+
+.. |status-badge| image:: https://img.shields.io/badge/Status-Maintained-brightgreen
+
+.. |ci-badge| image:: https://github.com/openedx/frontend-app-communications/actions/workflows/ci.yml/badge.svg
+    :target: https://github.com/openedx/frontend-app-communications/actions/workflows/ci.yml
+    :alt: Continuous Integration
+
+.. |codecov-badge| image:: https://codecov.io/github/openedx/frontend-app-communications/coverage.svg?branch=master
+    :target: https://codecov.io/github/openedx/frontend-app-communications?branch=master
+    :alt: Codecov