add contact button to footer

views/partials/footer.jade

@@ -6,6 +6,7 @@
         a.ion-social-facebook(href="/field-guide/how-can-i-find-other-free-code-camp-campers-in-my-city")  Facebook  
         a.ion-social-twitter(href="http://twitter.com/freecodecamp", target='_blank')  Twitter  
         a.ion-locked(href="/privacy")  Privacy  
+        a.ion-android-mail(href="mailto:team@freecodecamp.com")  Contact  
     .col-xs-12.visible-xs.visible-sm
         a.ion-speakerphone(href='http://blog.freecodecamp.com', target='_blank')
             span.sr-only Free Code Camp's Blog
@@ -19,3 +20,5 @@
             span.sr-only Free Code Camp on Twitter
         a.ion-locked(href="/privacy")
             span.sr-only Free Code Camp's Privacy Policy
+        a.ion-android-mail(href="mailto:team@freecodecamp.com")
+            span.sr-only Contact Free Code Camp by email