Update .gitignore
Symfony project has been created. Entities have been created
Changes in annotation

Annotations have been changed because contained some errors with sintax
Add fixtures to the project
The util.php file  is added

The GetSlug function has been implementated in src/Hechizo/OfertaBundle/Util/Util.php.
The entities Ciudad.php, Oferta.php and Tienda.php have been modified and now use the getSlug function when set the name attribute
src/Cupon/CiudadBundle/DataFixtures/ORM/Ciudades.php has changed because just now it isn't necessary to save Slug
Readme has been modified