Adding new dependency of SfNeklandEditionBundle

[Nek-]

After update to new Sf 3.0 edition, a new non-critical issue happens: after installing a new project, the bin/console of symfony is not automatically added to git when you type git add .. You need to force the addition of the file to git by using git add -f bin/console.

This issue is more relative to Symfony every other dependencies use this folder to put their binary (and so this folder should be ignored as vendors).

Proposition of a solution for Symfony Nekland Edition: creating a dependency script, adding it to the composer install process, this script will handle the addition to git (by asking the user if he wants to create a new git repo, etc).

[Nek-]

This dependency should also change the README by another one that describe better the project and how to install it.