   signupWithFacebook: ({userID, name, email, facebookID}, options={}) ->
     fetchJson(@url(userID, 'signup-with-facebook'), _.assign({}, options, {
       method: 'POST'
+      credentials: 'include'
       json: { name, email, facebookID, facebookAccessToken: application.facebookHandler.token() }
     }))
     .then ->

  signupWithPassword: ({userID, name, email, password}, options={}) ->
    fetchJson(@url(userID, 'signup-with-password'), _.assign({}, options, {
      method: 'POST'
      json: { name, email, password }
    }))
    .then ->

  signupWithGPlus: ({userID, name, email, gplusID}, options={}) ->
    fetchJson(@url(userID, 'signup-with-gplus'), _.assign({}, options, {
      method: 'POST'
      credentials: 'include'
      json: { name, email, gplusID, gplusAccessToken: application.gplusHandler.token() }
    }))
    .then ->
