Updated readme - changed recommended migrations to prevent errors whe…

…n using strict database mode

README.md

@@ -5,21 +5,21 @@ Provides an Eloquent trait to automatically maintain created_by and updated_by (
 ## Requirements
 
 * This package requires PHP 5.6+
-* It has been tested against Laravel 5.2 (though should work with previous versions of Laravel 5).
+* It works with Laravel 5.x (and may work with earlier versions too).
 
 ## Installation
 
-Require this package in your `composer.json` and update composer.
+Require this package with composer
 
-```php
-"wildside/userstamps": "0.1.0"
-```
+````
+composer require wildside/userstamps
+````
 
 Migrate your Model's table to include a `created_by` and `updated_by` (and `deleted_by` if using `SoftDeletes`).
 
 ```php
-$table -> unsignedInteger('created_by') -> after('created_at');
-$table -> unsignedInteger('updated_by') -> after('updated_at');
+$table -> unsignedInteger('created_by') -> nullable() -> default(null) -> after('created_at');
+$table -> unsignedInteger('updated_by') -> nullable() -> default(null) -> after('updated_at');
 ```
 
 Load the trait in your Model.