Move Pagination class to example
Update namespace for the PaginationInterface.
Since this moment all classes (interfaces, etc) of extensions  must be in this namespace.
Fix namespace of PaginationInterface
Add abstract events. They will be need later, maybe.
Update README.md
Profile of the user
Allow to override data for the profile view
Allow get access to the data by key.
Set default data to the event. Update example.
Allow to update any user data.
Allow chaining methods