[IMP] Update README

Author: mstuttgart

README.md

@@ -82,6 +82,7 @@ Below is a list of all available snippets.
 | `ofo2m`    | Add new field One2many      |
 | `omcreate` | Add a method create         |
 | `omwrite`  | Add a method write          |
+| `omunlink` | Add a method unlink         |
 | `omcomp`   | Add a method compute        |
 | `omchange` | Add a method onchange       |
 
@@ -132,4 +133,4 @@ See [changelog](CHANGELOG.md).
 
 This snippets are based in [odoo-pycharm-templates](https://github.com/mohamedmagdy/odoo-pycharm-templates) project.
 
-Copyright (C) 2018 by Michell Stuttgart
+Copyright (C) 2018-2019 by Michell Stuttgart