Remove vendor/ dir
Fix tests & travis-ci
New options with Doctrine ORM

* added option to autoenerate ids
* added option to call methods on entities
* added modified version of Faker which allow these options
(it also repairs one-to-one relationships)
Replace classloader by composer one in tests
Repaired populator service for other populators then Doctrine
remove composer.lock
Fix travis-ci
Fix travis-ci config (again)
Update composer deps
Move doc to Resources/doc/

Fix #18
Fix typo
Fixed typo
Merge pull request #19 from pborreli/patch-1

Fixed typo
add documentation on tagged providers