Merge pull request sorrycc#178 from zzarcon/add_focusable

Add 'Focusable' to 'Tours And Guides'

README.md

@@ -498,7 +498,7 @@ Besides libraries, there're [Collection on Codepen](http://codepen.io/collection
 * [pageguide](https://github.com/tracelytics/pageguide) - An interactive guide for web page elements using jQuery and CSS3.
 * [hopscotch](https://github.com/linkedin/hopscotch) - A framework to make it easy for developers to add product tours to their pages.
 * [joyride](https://github.com/zurb/joyride) - jQuery feature tour plugin.
-
+* [focusable](https://github.com/zzarcon/focusable) - Set a spotlight focus on DOM element adding a overlay layer to the rest of the page.
 
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