add birthday to a info struct (#108)

lib/ueberauth/auth/info.ex

@@ -14,6 +14,7 @@ defmodule Ueberauth.Auth.Info do
           description: binary | nil,
           image: binary | nil,
           phone: binary | nil,
+          birthday: binary | nil,
           urls: map
         }
 
@@ -33,6 +34,8 @@ defmodule Ueberauth.Auth.Info do
             image: nil,
             #  The telephone number of the authenticating user (no formatting is enforced).
             phone: nil,
+            # The birthday of an authenticated user
+            birthday: nil,
             #  A map containing key value pairs of an identifier for the website and its URL. For instance, an entry could be "Blog" => "http://intridea.com/blog"
             urls: %{}
 

test/support/mixins.ex

@@ -19,6 +19,7 @@ defmodule Support.Mixins do
           location: "Some location",
           description: "Some description",
           phone: "555-555-5555",
+          birthday: "2000-01-01",
           urls: %{
             "Blog" => "http://foo.com",
             "Thing" => "http://thing.com"

test/ueberauth_test.exs

@@ -197,6 +197,7 @@ defmodule UeberauthTest do
     assert info.location == "Some location"
     assert info.description == "Some description"
     assert info.phone == "555-555-5555"
+    assert info.birthday == "2000-01-01"
     assert info.urls == %{"Blog" => "http://foo.com", "Thing" => "http://thing.com"}
   end