README.md file created

Closes #3347871

README.md

+# Typed Data API enhancements
+
+## Contents of this file
+
+ - Introduction
+ - Requirements
+ - Installation
+ - Configuration
+ - Maintainers
+
+## Introduction
+
+The Typed Data API Enhancements module adds functionality to the core Drupal
+TypedData API without altering the operation of the existing core API. These new
+features are available for developers to use within modules that rely on
+manipulation of typed data. Specifically, the functionality in this module was
+originally part of Rules (https://www.drupal.org/project/rules), but was split
+off because it can be of general use.
+
+The new features added by this module are:
+ - TypedData Form Widgets
+ - TypedData Tokens
+ - DataFetcher Utility
+
+## Requirements
+
+This module should only be installed as a dependency, if required by another
+module, as it does nothing by itself.
+
+## 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).
+
+## Configuration
+
+- Enable the module at Administration > Extend.
+
+## Maintainers
+
+- Wolfgang Ziegler - [fago](https://www.drupal.org/u/fago)
+- Tim Rohaly - [TR](https://www.drupal.org/u/tr)
+
+