wellflat

This is a plugin which gives you a small card to show your GitHub user profile summary. You just have to put shortcode.
Features include: 
+ GitHub account name and avatar 
+ recently active repository 
+ frequently used language list sorted by repository’s stargazers count 
+ public repositories and gists count 
+ followers count 
+ total stargazers count
Notice: 
This plugin caches GitHub user profile data into the database (expires 4 hours).

WP GitHub Card

This plugin provides simple GitHub profile summary card.

AJ Troxell

Three ways are provided to insert the shortcode. The value “xxxxxx” represents your Gist ID, and “name” is the filename of the file within the Gist.
<ul>
<li>Insert [gist id=”xxxxxx” file=”name”] manually.</li>
<li>By using the HTML Editor shortcode button.</li>
<li>By pressing ctrl+alt+g. *You can place these shortcodes in pages, posts or any custom content.</li>
</ul>

GitHub Gist Files Shortcode

A Wordpress plugin which will insert a specific file from a Gist using the shortcode [gist id="xxxxxx" file="name"].

WP GitHub Card vs GitHub Gist Files Shortcode