describe new glow options

Author: dangowans

README.md

@@ -33,8 +33,10 @@ The Web Fonts version does offer [stacking](https://fontawesome.com/how-to-use/o
 `glow`
 - Adds an outline to the icon for some really fancy layering.
 - Defaults to white, with some Bootstrap 3 background color options.
+- `glow-black`, `glow-danger`, `glow-warning`, `glow-info`, `glow-success` variations available to force glow color.
 - *If you choose to use `glow`, you may need to add your own background color support.*
 
+
 `data-fa-mask=""`
 - Slightly different than the Font Awesome 5 specification.
 - The existence of this attribute will **attempt** to set the icon's color to that of the background.

index.htm

@@ -164,6 +164,7 @@ <h2>Layering with <code>glow</code></h2>
       <p class="alert alert-success">
         <strong>Unique to this CSS solution</strong>, a special <code>glow</code> transform has been added to outline icons.
         The outline colour defaults to white, but also takes into account some Bootstrap 3 background classes on parent elements.
+        You can also use <code>glow-black</code>, <code>glow-danger</code>, <code>glow-warning</code>, <code>glow-success</code>, and <code>glow-info</code> variations to set the glow colour.
         <strong>You may need to edit the colour options depending on your template.</strong>
       </p>