Replace README.txt with README.md

Patch is working and marking it to RTBC.

MR needs to be rebased.

Rebased with latest changes. Please review.

Hi sakthi_dev

I reviewed your changes in MR!1 and it doesn't follow the README.md template. →

Thank you

Please review.

Hi nitin_lama

I reviewed your changes and the "project page" is a duplicate and the "project page and issue queue" first letter is capitalized and missing a dot. The ToC "content" should not be capitalized. For more information visit the README.md template. →
Thank you.

Please review.

Hi nitin_lama

I reviewed your changes it resolved comment #16 but I noticed the installation section format is not following the README,md template. It should be

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).

Thank you.

I done minor changes. Please review.
Thank you.

Changed to small letters for "Project page" and "Issue queue", please review. Thank you.

Thanks all who contibuted patches. I fixed minor changes and comitted MR.

Automatically closed - issue fixed for 2 weeks with no activity.