Supports processors when the plugin spoon a project.
Improves pom.xml of the project.

Rollback to 2.3.1 spoon's version, changes groupId
and version of the plugin in the pom.
No more spoon project already spoon
Makes possible to launch spoon with processors in command line.
refactors package of the plugin.
Merge pull request #4 from GerardPaligot/processors