I have just unconsciously deleted my button plugin and I completely forgot its name. However, I have just found the plugin in Youtube but the author just didn't mention its name either.
Here is the video.
<iframe width="560" height="315" src="http://www.youtube.com/embed/__RXuQGewkY?rel=0" frameborder="0" allowfullscreen></iframe>
I need your help to find the plugin again because all of the buttons in my site now show only shortcode not buttons.