Update Readme text and rename it to a markdown file.

README.md

+Drupal Bootstrap Utilities
+=========
+
+Bootstrap Utilities is a module that adds Filter options for easy content creation using a Bootstrap theme in Drupal. When you use Bootstrap 4 or Bootstrap 5 in your site, this module helps you to use Bootstrap with less hassle. It comes with **4 text filters**. These filters will add Bootstrap classes automatic to HTML elements, so Bootstrap styles are applied automatic.
+
+_The text filters using xPath to apply the classes. No regular expressions are used to keep high performance._
+
+Text editor filters:
+--------------------
+
+### Table filter options
+
+*   Remove `width` and `height` attributes from table cells.
+*   Adds `.table-striped` to add zebra-striping to any table row within the `<tbody>`.
+*   Adds `.table-hover` to enable a hover state on table rows within a `<tbody>`.
+*   Adds `.table-sm` to make tables more compact by cutting cell padding in half.
+*   Remove `width` and `height` attributes from table cells, so table behaves more responsive.
+
+### Blockquote filter
+
+This filter will allow you to add default Bootstrap classes to a blockquote
+
+### Figure filter
+
+This filter will allow you to add default Bootstrap classes to a figure HTML element and its caption.
+
+### Image filter
+
+This filter will allow you to add a default Bootstrap class to each image HTML element.
+
+Module installation
+-------------------
+
+Install Drupal module as usual. Visit [https://www.drupal.org/docs/extending-drupal/installing-modules](https://www.drupal.org/docs/extending-drupal/installing-modules) for further information.
+
+Add the desired filters via: Home » Administration » Configuration » Content authoring » Text formats and editors.
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README.txt

-Drupal Bootstrap Utilities