Go to Admin ->General Options ->Members ->Members Options ->Profilefields...........New Field (see screenshots)

Upload using FTP Github.png (see atachment) into assets/fields
add code below into Show Enclosed Within Text (Optional) field
Code: [Select] Select your privacy under Who can see and edit this field
and add your GitHub username into GitHub field Forum profile.



Upload using FTP Github.png (see atachment) into assets/fields
add code below into Show Enclosed Within Text (Optional) field
<a href="https://github.com/{INPUT}" target="_blank" title="GitHub - {INPUT}"><img src="{IMAGES_URL}/fields/Github1.png" alt="GitHub - {INPUT}"></a>
and add your GitHub username into GitHub field Forum profile.
