contact key

database/migrations/2014_10_13_000000_create_users_table.php

@@ -337,6 +337,7 @@ class CreateUsersTable extends Migration
             $table->string('token')->nullable();
             $table->boolean('is_locked')->default(false);
             $table->boolean('send_invoice')->default(true);
+            $table->string('contact_key')->nullable();
             $table->rememberToken();
             $table->timestamps(6);
             $table->softDeletes();