Issue #3337780: Replace README.txt with README.md

Closes #3337780

README.md

+# Field image tooltips
+
+This module provides configured Paragraphs bundle that can be used in any
+content type in order to add image with tooltips on it. By clicking on this
+tooltip, users will see the attached nodes in a Ctools modal windows.
+
+For a full description of the module, visit the
+[project page](https://www.drupal.org/project/field_image_tooltips).
+
+Submit bug reports and feature suggestions, or track changes in the
+[issue queue](https://www.drupal.org/project/issues/field_image_tooltips).
+
+
+## Table of contents
+
+- Requirements
+- Installation
+- Configuration
+- Maintainers
+
+
+## Requirements
+
+This module requires the following modules:
+
+- [Features](https://www.drupal.org/project/features)
+- [Paragraphs](https://www.drupal.org/project/paragraphs)
+
+
+## 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
+
+- Add a field Paragraphs to any entity, for example to a node using the Embedded
+  field widget. For that use the the usual "Manage fields" interface provided
+  by the Field UI Drupal module, for example
+  "Admin-> Structure-> Content types-> Article-> Manage fields".
+
+- On the field configuration form in the "Allowed Paragraph bundles" choose
+  "Image with tooltips".
+
+- You may also change the default settings for the fields in "Field image
+  tooltips" Paragraphs bundle. For that, use the the usual "Manage fields"
+  interface provided by the Paragraphs Drupal module e.g.
+  "Admin > Structure > Paragraph Bundles > Image with tooltips > Manage fields".
+
+
+## Maintainers
+
+- Andriy Zahura - [shkiper](https://www.drupal.org/u/shkiper)

[Alberto Paderno]

There are two the.

A comma is also missing after For that.