fixing up the authenticator to allow identiy chaining

database/migrations/2014_10_12_000000_create_users_table.php

@@ -17,7 +17,7 @@ class CreateUsersTable extends Migration
             $table->increments('id');
 	        $table->timestamps();
             $table->string('name');
-            $table->string('email')->unique();
+            $table->string('email')->unique()->nullable();
             $table->string('password')->nullable();
             $table->rememberToken();
         });