http://sridharkatakam.com/mailing-list-opt-form-social-follow-buttons-entry-genesis/

gistfile1.php

genesis_register_sidebar( array(
	'id'          => 'after-entry',
	'name'        => __( 'After Entry', 'metro' ),
	'description' => __( 'This is the after entry section.', 'metro' ),
) );

//* Hooks after-entry widget area to single posts
add_action( 'genesis_entry_footer', 'metro_after_post'  );
function metro_after_post() {

    if ( ! is_singular( 'post' ) )
    	return;

    genesis_widget_area( 'after-entry', array(
		'before' => '<div class="after-entry widget-area"><div class="wrap">',
		'after'  => '</div></div>',
    ) );

}

social-follow-widget-content-placeholder.html

<div class="after-post-social">
	
	<p class="after-post-social-title">Additionally you can follow us via:</p>

	<div class="after-post-social-facebook after-post-social-btn">
		<!-- Facebook follow code here -->
	</div>


	<div class="after-post-social-gplus after-post-social-btn">
		<!-- Google+ follow code here -->
	</div>


	<div class="after-post-social-twitter after-post-social-btn">
		<a href="https://twitter.com/srikat" class="twitter-follow-button" data-show-count="false" data-size="large">Follow @srikat</a>
		<script>!function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0],p=/^http:/.test(d.location)?'http':'https';if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src=p+'://platform.twitter.com/widgets.js';fjs.parentNode.insertBefore(js,fjs);}}(document, 'script', 'twitter-wjs');</script>
	</div>


	<div class="after-post-social-rss after-post-social-btn">
		<a href="http://sridharkatakam.com/feed/">
			<img class="alignnone size-full wp-image-19514" alt="rss-icon" src="http://example.dev/wp-content/uploads/2013/10/rss-subscribe.png" />
		</a>
	</div>
</div>

social-follow-widget-content.html

<div class="after-post-social">
	
	<p class="after-post-social-title">Additionally you can follow us via:</p>

	<div class="after-post-social-facebook after-post-social-btn">
		<iframe src="//www.facebook.com/plugins/follow.php?href=https%3A%2F%2Fwww.facebook.com%2Fsridhar.katakam&amp;width=190&amp;height=42&amp;colorscheme=light&amp;layout=standard&amp;show_faces=false&amp;appId=380825228697500" scrolling="no" frameborder="0" style="border:none; overflow:hidden; width:190px; height:42px;" allowTransparency="true"></iframe>
	</div>
	

	<div class="after-post-social-gplus after-post-social-btn">
		<!-- Place this tag where you want the widget to render. -->
		<div class="g-follow" data-annotation="bubble" data-height="24" data-href="//plus.google.com/107780594838940170775" data-rel="author"></div>

		<!-- Place this tag after the last widget tag. -->
		<script type="text/javascript">
  (function() {
    var po = document.createElement('script'); po.type = 'text/javascript'; po.async = true;
    po.src = 'https://apis.google.com/js/plusone.js';
    var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(po, s);
  })();
</script>
	</div>


	<div class="after-post-social-twitter after-post-social-btn">
		<a href="https://twitter.com/srikat" class="twitter-follow-button" data-show-count="false" data-size="large">Follow @srikat</a>
		<script>!function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0],p=/^http:/.test(d.location)?'http':'https';if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src=p+'://platform.twitter.com/widgets.js';fjs.parentNode.insertBefore(js,fjs);}}(document, 'script', 'twitter-wjs');</script>
	</div>


	<div class="after-post-social-rss after-post-social-btn">
		<a href="http://sridharkatakam.com/feed/">
			<img class="alignnone size-full wp-image-19514" alt="rss-icon" src="http://example.dev/wp-content/uploads/2013/10/rss-subscribe.png" />
		</a>
	</div>
</div>

style.css

/* Social sharing buttons below single posts */

.after-post-social {
	display: table;
	margin: 0 auto;
}

.after-post-social-title {
	text-align: center;
	font-weight: bold;
}

.after-post-social-btn {
	float: left;
	margin-right: 0.9rem;
}

.after-post-social-btn:last-child {
	margin-right: 0;
}

@media only screen and (max-width: 1139px) {
	.after-post-social-twitter {
		clear: both;
	}
}

@media only screen and (max-width: 1024px) {
	.after-post-social-btn {
	    margin-right: 0;
	    float: none;
	    margin-bottom: 0.5em;
	}
	.after-post-social-btn:last-child {
	    margin-bottom: 0;
	}
}

@media only screen and (max-width: 480px) {
	.after-post-social-btn {
	    margin-bottom: 0.5em;
	    float: none;
	}
	.after-post-social-btn:last-child {
	    margin-bottom: 0;
	}
}