Issue #3321537 by gowthamrajkrishnasamy, Sonal Gyanani: Replace README.txt with README.md

README.md

+# Split Preview
+
+This Module provides the Split Feature, Split the preview page on different 
+page layouts, mobile, Tablet and Desktop view.
+
+Additionally this module also provide the preview feature on node layout 
+builder page as well.
+
+For a full description of the module, visit the
+[project page](https://www.drupal.org/project/split_preview).
+
+Submit bug reports and feature suggestions, or track changes in the
+[issue queue](https://www.drupal.org/project/issues/split_preview).
+
+
+## Contents of this file
+
+- Requirements
+- Installation
+- Configuration
+- Usage
+
+
+## Requirements
+
+This module requires no modules outside of Drupal core.
+
+
+## Installation
+
+- If your site is managed via Composer, use Composer to download the module.
+
+    1. `composer require drupal/split_preview`
+    1. `drush en split_preview`
+    1. `drush cr`
+
+  Or
+
+- 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 Split Preview go to `Administration > Extend` or by drush 
+  command `drush en split_preview`. 
+- Login as admin user, Go to Administrator menu => Structure => 
+  Content Types => Select Any Content Type => Edit Content Type => 
+  Then select the radio button preview optional or required.
+- On your content type Live Preview Button Appears.
+
+
+## Usage
+
+- Instead of opening (default) node preview on independent page, This split 
+  preview provides the feature to open that preview at same page (Ajax Load) 
+  in a IFrame, Also provides a split previews like Mobile, Tablet and Desktop 
+  preview.

README.txt

-DESCRIPTION
------------
-
-This module provide a preview content feature on same page, with addition split preview for Mobile, Tablet and Desktop.
-
-INSTALL
--------
-
-If your site is managed via Composer, use Composer to download the module.
-
-composer require drupal/split_preview
-drush en split_preview
-drush cr
-
-Or
-
-Enable the module in 'Extend' page (/admin/modules).
-
-Configuration:
-1] Make sure that your default preview feature is enabled, to enable go to Structure => Content Types => Select Content
-Type => Select Edit, Select radio button preview optional or required.
-2] Enable the module split_preview
-3] On your content type Live Preview Button Appears.
-
-USAGE
------
-
-Instead of opening  (default) node preview on independent page, This split preview provides the feature to open that
-preview at same page (Ajax Load) in a IFrame, Also provides a split previews like Mobile, Tablet and Desktop preview.