Update README.md
Add ability to use param in breadcrumb title

Now we can add parameters in the title as:
    /**
     * @Breadcrumb("{book}")
     */
    public function showAction(Book $book) { }
Update README.md
Update README.md
Adding the ability to call a function of the object

Adding the ability to call a function of the object with the following
syntax :
@Breadcrumb("{book.author}")
Handle parameters

We can now define the parameters for the function
Change Exception

Remove
Symfony\Component\PropertyAccess\Exception\NoSuchPropertyException to
be compatible with older versions of Symfony
Update README.md

Première ébauche de la documentation sur les valeurs des objets dans
les titres