Add information to the readme file

Author: maximejobin

README.md

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 # accessibility-font-resizer
-Resize your website font sizes for better accessibility
+Make accessibility better for your visitors by enabling them to resize the text on your website and make it bigger.
+
+## Description
+
+Would you like to enable all your visitors to enjoy your site? Not all visitors sees your website the way you do.
+
+This plugin allows you to make your website easier to read by  to give the visitors of your site the option to change the font size of your text.
+
+Benefits:
+
+* Enables more visitor to enjoy your website with custom large and very large font sizes.
+* Works no matter if your site uses percentage, pixels, em or rem as your font sizes.
+* Your visitor's text size is remembered when (s)he revisits the site.
+* No coding skills required.
+* Works within minutes.
+* Flexible and easy to use.
+* Won't slow your website.
+
+This plugin was created and is maintained by SatelliteWP, a [WordPress maintenance service](https://www.satellitewp.com/en?utm_source=accessibility-font-resizer).
+
+
+## Compatibility
+
+This plugin is multilingual ready.
+
+
+## Installation
+
+1. In your WordPress administration section, goto `Plugins > Add new`.
+1. Search for `Accessibility font resizer`.
+1. Click on 'Install now'.
+1. Once the plugin is installed, click on 'Activate'.
+1. Go to `Settings > Font resizer` to edit the plugin's settings.
+
+
+## Frequently Asked Questions
+
+### How can I activate the function of the plugin?
+
+Once the plugin is activated, the functions of the plugin work.
+
+
+### I have activated the plugin, now what?
+
+To be able to use the plugin, you should create a menu. You can use (or not) that menu in a widget.
+
+The trick is to simply add the CSS class `afr-normal` to display normal size, `afr-large` for large text and `aft-xlarge` for very large text.
+
+You can also apply this CSS technique in your PHP files or directly in your content.
+
+
+### I click the resizer, but (some of) my fonts don't change in size. How to fix that?
+
+Simply inspect the element that is not resizing properly to know what element it is. Then, simply add it to the 'HTML Elements' section in the options' screen.
+
+You can find the plugin's settings in `Settings > Font resizer`.
+
+
+### I use font-size in rem in my theme, will it work?
+
+It's not a problem. The plugin works with all units!
+
+
+### I use font-size in pixels in my theme, will it work?
+
+It's not a problem. The plugin works with all units!
+
+
+### I use font-size in percentage in my theme, will it work?
+
+It's not a problem. The plugin works with all units!
+
+
+### I want to use a shortcode in my content element. How?
+
+There is no shortcode for this plugin. You can call CSS classes directly without the need of a shortcode.