This guide will show you how to add a new social icon to the Social Icons widget, in this example we will add a Pinterest icon.
Open the file wp-content/themes/storm/includes/widgets/social.php and find this line:
Below this add this code:
Save the file and upload it to your site.
Find a 32 x 32 icon for this network, you will be able to find icons using a search engine. The icon will need to be PNG type and give it the filename pinterest.png (the filename without the .png part must match the left hand string in the code added in Step 1).
Upload the icon to wp-content/themes/storm/images/social-icons/pinterest.png
The widget should now show the option to add a Pinterest URL.