Switch to README.md

Hi @gowthamrajkrishnasamy Thanks, but there are still some issues in format of README.md file like:
1. Heading should not be all capital.
2. Two lines prior to ## headings
3. Module name is missing

Please check README.md format here https://www.drupal.org/docs/develop/managing-a-drupalorg-theme-module-or... for more detail

Hi

I applied and tested MR !1 and I noticed that REQUIREMENTS section is missing, this is a required sections according to Drupal README.md template and please follow the order of sections.

Moving this to needs work

For reference, below is the output that MR !1 made

# CONTENTS OF THIS FILE

 - Introduction
 - Installation
 - Configuration
 - Troubleshooting
 - Links

## INTRODUCTION

This module allows you to render all your menus with jsTree library via blocks

 - Once you have the module enabled you will have a new block called "jsTree menu".
   On each instance of this block type you will be able to select any of the existing
   menus. Then, every instance of this block will then render its menu with jsTree.

## INSTALLATION 

 - In Drupal 8 version of this module "jquery_jstree" is no longer required.

 - For Drupal 9 compatibility, the Libraries API module is no longer required.
   However, for backwards compatibility, the folder where the jstree libraries
   should be set remains the same.

 - Install the jstree libraries (https://www.jstree.com/) into DRUPAL_ROOT/libraries/jstree
   You need to put there the whole content of "dist" directory inside jstree ZIP file.
   Once done, you should have this file DRUPAL_ROOT/libraries/jstree/jstree.min.js and all
   jstree themes under DRUPAL_ROOT/libraries/jstree/themes/*

 - [OPTIONAL] Install the "proton" theme for jsTree into libraries folder. Go to
   (https://github.com/orangehill/jstree-bootstrap-theme) and download it.

   Copy the `dist/themes/proton` folder to `DRUPAL_ROOT/libraries/jstree/themes`

   If done right, you will have style.min.css file on:
   `DRUPAL_ROOT/libraries/jstree/themes/proton/style.min.css`

 - Install as you would normally install a contributed Drupal module. See:
   (https://drupal.org/documentation/install/modules-themes/modules-7)
   for further information.

 - To render the tree icons correctly you will need to install the Bootstrap theme
      (default icons) or the Font Awesome module:

   - (https://www.drupal.org/project/bootstrap)
   - (https://www.drupal.org/project/bootstrap_library)
   - (https://www.drupal.org/project/fontawesome)

## CONFIGURATION

 - Configure module's options in Administration » Configuration » User Interface
   » jsTree menu:

    - jsTree theme

      Allows you to choose between "default" jsTree theme or "proton" (which has to be
      downloaded)

    - Menu maximum height

      Allows you to choose the height of the menu.

    - Remove border of jsTree

      Allows to remove the border of the tree.

    - Normal icon

      Icon displayed on every node of tree except leaves. You can use Bootstrap glyphicons
      and/or Font Awesome icons.

      - Bootstrap glyphicons example: glyphicon glyphicon-tag.see more at (http://getbootstrap.com/components/)
      - Font Awesome example: fa fa-file. see more at (http://fontawesome.io/icons/)

    - Leaves icon

      Icon displayed on tree leaves. You can use Bootstrap glyphicons and/or Font Awesome
      icons.

      - Bootstrap glyphicons example: glyphicon glyphicon-tag. see more at (http://getbootstrap.com/components/)
      - Font Awesome example: fa fa-file . see more at (http://fontawesome.io/icons/)

## TROUBLESHOOTING

 * If you only see level 1 items on the menu just edit parent menu items and
   mark their checkbox "Show as expanded" and save the changes.

## LINKS

 - (https://www.jstree.com/)
 - (https://github.com/vakata/jstree)
 - (https://github.com/orangehill/jstree-bootstrap-theme)
 - (https://www.orangehilldev.com/jstree-bootstrap-theme/demo/)

Please review merge request !3

Hi gajanan.wasnik

I applied and tested your MR !3 and I confirmed that it has now the REQUIREMENTS section in the README.md, on the other hand, please refrain on creating another MR, instead you can work/debug on the exisiting MR that's been created. Moving this to RTBC but please refrain on creating many MR's because it will just add noise to the issue.

Below is the output of MR !3

# jsTree menu

This module allows you to render all your menus with jsTree library via blocks

 - Once you have the module enabled you will have a new block called "jsTree menu".
   On each instance of this block type you will be able to select any of the existing
   menus. Then, every instance of this block will then render its menu with jsTree.

For a full description of the module, visit the
[project page](https://www.drupal.org/project/jstree_menu).

Submit bug reports and feature suggestions, or track changes in the
[issue queue](https://www.drupal.org/project/issues/jstree_menu).


## Table of contents

 - Requirements
 - Installation
 - Configuration
 - Troubleshooting
 - Maintainers
 - Links


## Requirements

This module requires no modules outside of Drupal core.


## Installation

 - In Drupal 8 version of this module "jquery_jstree" is no longer required.

 - For Drupal 9 compatibility, the Libraries API module is no longer required.
   However, for backwards compatibility, the folder where the jstree libraries
   should be set remains the same.

 - Install the [jstree libraries](https://www.jstree.com/) into DRUPAL_ROOT/libraries/jstree
   You need to put there the whole content of "dist" directory inside jstree ZIP file.
   Once done, you should have this file DRUPAL_ROOT/libraries/jstree/jstree.min.js and all
   jstree themes under DRUPAL_ROOT/libraries/jstree/themes/*

 - [OPTIONAL] Install the "proton" theme for jsTree into libraries folder. Go to
   [jstree bootstap theme](https://github.com/orangehill/jstree-bootstrap-theme) 
   and download it.

   Copy the `dist/themes/proton` folder to `DRUPAL_ROOT/libraries/jstree/themes`

   If done right, you will have style.min.css file on:
   `DRUPAL_ROOT/libraries/jstree/themes/proton/style.min.css`

 - 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).

 - To render the tree icons correctly you will need to install the 
    [Bootstrap theme](https://www.drupal.org/project/bootstrap) or
    [Bootstrap library](https://www.drupal.org/project/bootstrap_library)
    (default icons) or the [Font Awesome module](https://www.drupal.org/project/fontawesome)


## Configuration

 - Configure module's options in Administration » Configuration » User Interface
   » jsTree menu:

    - jsTree theme

      Allows you to choose between "default" jsTree theme or "proton" (which has to be
      downloaded)

    - Menu maximum height

      Allows you to choose the height of the menu.

    - Remove border of jsTree

      Allows to remove the border of the tree.

    - Normal icon

      Icon displayed on every node of tree except leaves. You can use Bootstrap glyphicons
      and/or Font Awesome icons.

      - Bootstrap glyphicons example: glyphicon glyphicon-tag.see more at 
      [Components](http://getbootstrap.com/components/)
      - Font Awesome example: fa fa-file. see more at [Font awesome icons](http://fontawesome.io/icons/)

    - Leaves icon

      Icon displayed on tree leaves. You can use Bootstrap glyphicons and/or Font Awesome
      icons.

      - Bootstrap glyphicons example: glyphicon glyphicon-tag. see more at 
      [Components](http://getbootstrap.com/components/)
      - Font Awesome example: fa fa-file . see more at [Font awesome icons](http://fontawesome.io/icons/)


## Troubleshooting

 - If you only see level 1 items on the menu just edit parent menu items and
   mark their checkbox "Show as expanded" and save the changes.


## Maintainers

- Roger Codina - [rcodina](https://www.drupal.org/u/rcodina)


### LINKS

 - (https://www.jstree.com/)
 - (https://github.com/vakata/jstree)
 - (https://github.com/orangehill/jstree-bootstrap-theme)
 - (https://www.orangehilldev.com/jstree-bootstrap-theme/demo/)

There should only be a unique visible MR so I can't review it and commit it.

Thanks to all!