app/views/kuroko2/sessions/new.html.slim in kuroko2-0.5.2 vs app/views/kuroko2/sessions/new.html.slim in kuroko2-0.6.0

@@ -12,9 +12,9 @@
     #login-box.form-box
       .header Sign In
       .body
         p.lead Please sign in with Google account.
         .text-center
-          a.btn.btn-social.btn-google-plus href=auth_path("google_oauth2", state: params[:return_to])
+          = button_to auth_path("google_oauth2", state: params[:return_to]), class: 'btn btn-social btn-google-plus' do
             i.fa.fa-google-plus
             span Sign in with Google
       .footer