Merge pull request jsonwebtoken#191 from jsonwebtoken/add-crafted

Add creafted to header in intro page

Author: vctrfrnndz

views/introduction.jade

@@ -45,8 +45,9 @@ block content
         a(href='http://swag.auth0.com/', target='_blank') Get a T-shirt!
 
       .social
-        a.a0(href='https://auth0.com/', target='_blank')
-          img(src='/img/ico_a0_white.svg')
+        a.a0(href='https://auth0.com/?utm_source=jwtio&utm_campaign=craftedby', target='_blank')
+          span.by-text Crafted by
+          img(src='/img/pic_logo_ft.svg', alt='Token Based Authentication')
         a.twitter(href='https://twitter.com/auth0', target="_blank")
           img(src='/img/ico_twitter.svg')