Issue #3316791: Creating README.md File for the Module

Closes #3316791

README.md

+# Element Embed
+
+Provides the ability to embed [render elements](https://api.drupal.org/api/drupal/core!lib!Drupal!Core!Render!Element!RenderElement.php/class/RenderElement>) inside CKEditor using the [Embed module](https://www.drupal.org/project/embed)
+
+For a full description of the module, visit the
+[project page](https://www.drupal.org/project/element_embed).
+
+Submit bug reports and feature suggestions, or track changes in the
+[issue queue](https://www.drupal.org/project/issues/element_embed).
+
+
+## Table of contents
+
+- Requirements
+- Recommended modules
+- Installation
+- Configuration
+- Troubleshooting
+- FAQ
+- Maintainers
+
+
+## Requirements
+
+This module requires no modules outside of Drupal core.
+
+
+## Installation
+
+Install as you would normally install a contributed Drupal module. For further
+information, see
+[Installing Drupal Modules](https://www.drupal.org/docs/extending-drupal/installing-drupal-modules).
+
+
+## Maintainers
+
+- [Dave Reid](https://www.drupal.org/user/53892)
+- Adam Delaney - [adam-delaney](https://www.drupal.org/u/adam-delaney)