Sign in via Twitter (WIP).

config/config.exs

@@ -369,6 +369,17 @@ config :auto_linker,
     rel: false
   ]
 
+config :ueberauth,
+       Ueberauth,
+       base_path: "/oauth",
+       providers: [
+         twitter: {Ueberauth.Strategy.Twitter, []}
+       ]
+
+config :ueberauth, Ueberauth.Strategy.Twitter.OAuth,
+  consumer_key: System.get_env("TWITTER_CONSUMER_KEY"),
+  consumer_secret: System.get_env("TWITTER_CONSUMER_SECRET")
+
 # Import environment specific config. This must remain at the bottom
 # of this file so it overrides the configuration defined above.
 import_config "#{Mix.env()}.exs"