Issue 4 - Specify scopes for authorization

We were requesting read, write, and follow for the app, but not
for the user authorization. I've added these scopes to the oauth
redirect when logging in.

app/Http/Controllers/LoginController.php

@@ -70,7 +70,9 @@ class LoginController extends Controller
         session(['client_secret' => $client_secret]);
 
         # Redirect the user to their instance to log in.
-        return Socialite::driver('mastodon')->redirect();
+	return Socialite::driver('mastodon')
+            ->setScopes(config('services.mastodon.scope', config('services.mastodon.scopes')))
+            ->redirect();
     }
 
     /**