Update README.md

Author: DimaSavchenko

README.md

@@ -4,15 +4,15 @@ Awesome Bootstrap Checkbox
 [![NPM downloads](https://img.shields.io/npm/dm/awesome-bootstrap-checkbox.svg?style=flat)](https://www.npmjs.com/package/awesome-bootstrap-checkbox)
 [![Dependency Status](https://img.shields.io/david/dev/flatlogic/awesome-bootstrap-checkbox.svg?branch=master&style=flat)](https://www.npmjs.com/package/awesome-bootstrap-checkbox)
 
-Font Awesome Bootstrap Checkboxes & Radios plugin. Pure css way to make inputs look prettier. **No javascript**!
+[Font Awesome][] [Bootstrap][] Checkboxes & Radios plugin. Pure CSS way to make inputs look prettier. **No Javascript!**
 
-**[Demo](http://flatlogic.github.io/awesome-bootstrap-checkbox/demo/)**
+**[Demo][]**
 
 Use
 ------------
 
-First just include **awesome-bootstrap-checkbox.css** somewhere in your html. Or **awesome-bootstrap-checkbox.scss** if you use sass.
-Next everything is based on code convention. Here is checkbox markup from Bootstrap site:
+First just include **awesome-bootstrap-checkbox.css** somewhere in your HTML, or add the equivalent files to your [Sass](#using-sass) configuration.
+Next, everything is based on code convention. Here is checkbox markup from Bootstrap site:
 
 ````html
 <form role="form">
@@ -88,37 +88,74 @@ You may use `abc-checkbox-primary`, `abc-checkbox-danger`, `abc-radio-info`, etc
 
 `abc-checkbox-single` and `abc-radio-single` for inputs without label text.
 
-Glyphicons way (Opt-out Font Awesome)
+Inputs without label text:
+
+````html
+<div class="checkbox abc-checkbox">
+  <input type="checkbox" class="styled" id="singleCheckbox" value="option1" aria-label="Single checkbox One">
+  <label for="singleCheckbox"></label>
+</div>
+````
+
+Using [Sass][]
+----------
+
+As per example in the `demo` folder, to use Font Awesome you'll have to `@import` the following library parts:
+
+````scss
+@import "../bower_components/bootstrap-sass-official/assets/stylesheets/bootstrap/variables";
+@import "../bower_components/bootstrap-sass-official/assets/stylesheets/bootstrap/mixins";
+
+@import "../bower_components/Font-Awesome/scss/variables";
+
+@import "../awesome-bootstrap-checkbox";
+````
+
+Adjust this to the path where your bootstrap and font-awesome files are located.
+
+Custom icon font
 ------------
 
-If you want to use glyphicons instead of font-awesome then override `.abc-checkbox` class:
+If you want to use another icon font instead of Font Awesome, such as [Glyphicons][], override the default variables:
+````scss
+$font-family-icon: 'Glyphicons Halflings';
+$check-icon: "\e013";
+
+.abc-checkbox label:after {
+    padding-left: 4px;
+    padding-top: 2px;
+    font-size: 9px;
+}
+````
+
+Or for plain CSS, override the `.abc-checkbox` class (and `.styled` class for Opera):
 ````css
+input[type="checkbox"].styled:checked + label:after,
+input[type="radio"].styled:checked + label:after,
 .abc-checkbox input[type=checkbox]:checked + label:after {
     font-family: 'Glyphicons Halflings';
     content: "\e013";
 }
+
+input[type="checkbox"].styled:checked label:after,
+input[type="radio"].styled:checked label:after,
 .abc-checkbox label:after {
     padding-left: 4px;
     padding-top: 2px;
     font-size: 9px;
 }
 ````
 
-Using SASS
-----------
-
-As per example in the `demo` folder, to use these **awesome** you'll have to `@import` the following library parts:
-
-````scss
-@import "../bootstrap/scss/variables";
-@import "../bootstrap/scss/mixins";
-
-@import "../Font-Awesome/scss/variables";
-````
-
-Adjust this to the path where your bootstrap and font-awesome files are located.
-
 Credits
 ------------
 
-Based on the [Bootstrap 4][http://getbootstrap.com/] and the awesome [Font Awesome](https://github.com/FortAwesome/Font-Awesome).
+Based on the [Official Bootstrap Sass port][Bootstrap Sass] and the awesome [Font Awesome][].
+
+
+[Demo]: http://flatlogic.github.io/awesome-bootstrap-checkbox/demo/
+[Bootstrap]: http://getbootstrap.com/
+[Bootstrap Sass]: https://github.com/twbs/bootstrap-sass
+[Font Awesome]: https://github.com/FortAwesome/Font-Awesome
+[Glyphicons]: http://getbootstrap.com/components/#glyphicons
+[Sass]: http://sass-lang.com/
+[Less]: http://lesscss.org/