FIX: FA5 steam icon bug

plugin.rb

@@ -4,6 +4,10 @@
 # author: J. de Faye
 # template author: S. Saffron
 
+if respond_to?(:register_svg_icon)
+  register_svg_icon "fab fa-steam"
+end
+
 require File.expand_path('../omniauth-steam.rb', __FILE__)
 
 class SteamAuthenticator < ::Auth::Authenticator
@@ -68,8 +72,4 @@ register_css <<CSS
     background: #000;
 }
 
-.btn-social.steam:before {
-    content: $fa-var-steam;
-}
-
 CSS