docs: Update the readme.

* Re-rule the file to match the current standards.
* Add a "Dependencies" section that outlines the interpreter and service
  dependencies for the edx-platform codebase.  It's not comprehensiv but
  I couldn't find anything anywhere that was so start with something
  here for now.

README.rst

@@ -1,4 +1,3 @@
-#################
 Open edX Platform
 #################
 | |License: AGPL v3| |Status| |Python CI|
@@ -12,7 +11,7 @@ Open edX Platform
 .. |Status| image:: https://img.shields.io/badge/status-maintained-31c653
 
 Purpose
--------
+*******
 The `Open edX Platform <https://openedx.org>`_ is a service-oriented platform for authoring and
 delivering online learning at any scale.  The platform is written in
 Python and JavaScript and makes extensive use of the Django
@@ -27,7 +26,7 @@ platform.  Functionally, the edx-platform repository provides two services:
 * LMS (Learning Management Service), which delivers learning content.
 
 Installation
-------------
+************
 
 Installing and running an Open edX instance is not simple.  We strongly
 recommend that you use a service provider to run the software for you.  They
@@ -43,8 +42,28 @@ so, `Open edX Installation Options`_ explains your options.
 .. _Open edX Developer Stack: https://github.com/openedx/devstack
 .. _Open edX Installation Options:  https://openedx.atlassian.net/wiki/spaces/OpenOPS/pages/60227779/Open+edX+Installation+Options
 
+Dependencies
+============
+
+In order to build and run this code you'll need the following available on your
+system:
+
+Interperters/Tools:
+
+* Python 3.8
+
+* Node 16
+
+Services:
+
+* MySQL 5.7
+
+* Mongo 4.x
+
+* Memcached
+
 License
--------
+*******
 
 The code in this repository is licensed under version 3 of the AGPL
 unless otherwise noted. Please see the `LICENSE`_ file for details.
@@ -53,7 +72,7 @@ unless otherwise noted. Please see the `LICENSE`_ file for details.
 
 
 More about Open edX
--------------------
+*******************
 
 See the `Open edX site`_ to learn more about the Open edX world. You can find
 information about hosting, extending, and contributing to Open edX software. In
@@ -63,13 +82,13 @@ and other rich community resources.
 .. _Open edX site: https://openedx.org
 
 Documentation
--------------
+*************
 
-Documentation can be found at https://docs.edx.org.
+Documentation can be found at https://docs.openedx.org.
 
 
 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.
@@ -85,7 +104,7 @@ For more information about these options, see the `Getting Help`_ page.
 
 
 Issue Tracker
--------------
+*************
 
 We use JIRA for our issue tracker, not GitHub issues. You can search
 `previously reported issues`_.  If you need to report a problem,
@@ -96,7 +115,7 @@ please make a free account on our JIRA and `create a new issue`_.
 
 
 How to Contribute
------------------
+*****************
 
 Contributions are welcome! The first step is to submit a signed
 `individual contributor agreement`_.  See our `CONTRIBUTING`_ file for more
@@ -105,7 +124,7 @@ quality, which will make your contribution more likely to be accepted.
 
 
 Reporting Security Issues
--------------------------
+*************************
 
 Please do not report security issues in public. Please email
 security@edx.org.