Issue #3339163: Replace README.txt to README.md and update README.md

README.md

-INTRODUCTION
-------------
+# Menu Link Sync
 
 The Menu Link Sync module helps synchronize the position of menu items within
-Drupal installs with separate menus for every language, for instance when we have
-different "Main Menu - French", "Main Menu - English" and "Main Menu - Spanish"
-menus.
+Drupal installs with separate menus for every language, for instance when we
+have different "Main Menu - French", "Main Menu - English" and
+"Main Menu - Spanish" menus.
 
 This synchronization may be useful when the structure of the menus is too
 different for the built-in menu translation to be an adequate solution, but when
@@ -19,31 +18,54 @@ and relative position of the menu link for the default translation of the node.
 The form will then be updated through an AJAX call and the new parent and
 weight will be automatically selected.
 
+For a full description of the module, visit the
+[project page](https://www.drupal.org/project/menu_link_sync).
 
-REQUIREMENTS
-------------
+Submit bug reports and feature suggestions, or track changes in the
+[issue queue](https://www.drupal.org/project/issues/menu_link_sync).
 
-* Menu Link field: https://www.drupal.org/project/menu_link
 
+## Table of contents
 
-RECOMMENDED MODULES
--------------------
+- Requirements
+- Recommended modules
+- Installation
+- Configuration
+- Maintainers
 
-* This module integrates with Menu Link Weight:
-  - https://www.drupal.org/project/menu_link_weight
 
-  This integration allows us to synchronize the relative  position of a menu link
-  within a menu tree (ie. "underneath item X" / "above item Y"), instead of
-  simply copying the absolute numeric weight of the menu link from the source
-  node.
+## Requirements
 
-INSTALLATION
-------------
+This module requires the following module:
 
-Install as you would normally install a contributed Drupal module.
+- [Menu Link Weight](https://www.drupal.org/project/menu_link_weight)
 
 
-CONFIGURATION
--------------
+## Recommended modules
+
+This module integrates with the
+[Menu Link Weight](https://www.drupal.org/project/menu_link_weight) module.
+
+This integration allows us to synchronize the relative position of a menu link
+within a menu tree, instead of simply copying the absolute numeric weight of the
+menu link from the source node.
+
+
+## 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
 
 No special configuration is needed.
+
+
+## Maintainers
+
+- Bart Hanssens - [bart.hanssens](https://www.drupal.org/u/barthanssens)
+- Ruben Marques - [rutiolma](https://www.drupal.org/u/rutiolma)
+- Stefan Ruijsenaars - [stefan.r](https://www.drupal.org/u/stefanr-0)
+- [Ludo.R](https://www.drupal.org/u/ludor)

[Alberto Paderno]

Lines from 39 to 40 repeat what lines 45 and 46 say.