Updating README file to be a Markdown file that follows current Drupal best... (!5) · Merge requests · project / views_block_placement_exposed_form_defaults · GitLab

Updating README file to be a Markdown file that follows current Drupal best practice - https://www.drupal.org/docs/develop/managing-a-drupalorg-theme-module-or-distribution-project/documenting-your-project/readmemd-template

Closes #3230990