Add readme

Author: CasperLaiTW

readme.md

@@ -0,0 +1,8 @@
+```php
+Route::group(['namespace' => 'Auth'], function () {
+    // Authentication Routes.
+    Route::get('/login', 'LoginController@oauth')->name('user.login');
+    Route::get('/oauth/callback', 'LoginController@login');
+    Route::get('/logout', 'LoginController@logout')->name('user.logout');
+});
+```