Issue #3349919: Replace README.txt with README.md

README.txt → README.md

-Introduction
-------------
+## Introduction
 
 The Picture Background Formatter module creates an image field formatter that
 generates background image CSS code based on a Picture Mapping.
 
 
-Requirements
-------------
+## Requirements
+
 
 This module requires the following modules:
 
   * Picture (https://www.drupal.org/project/picture)
 
 
-Installation
-------------
+## Installation
+
 
   * Install as you would normally install a contributed Drupal module. See:
     https://drupal.org/documentation/install/modules-themes/modules-7
     for further information.
 
 
-Configuration
--------------
+## Configuration
 
   * A picture mapping must be created prior to utilizing the Picture Background
     Formatter
@@ -42,8 +40,8 @@ Configuration
       to appear
 
 
-Troubleshooting
----------------
+## Troubleshooting
+
 
 If you do not see the Picture Background Formatter formatter in your Content
 Type display, please make sure you have correctly configured a valid Picture