Deal with Doctrine entity having a one-to-one nullable relationship
Remove nonexistent names in Polish provider
Hungarian Providers added
Merge pull request #231 from sagikazarmark/master

Hungarian Providers added
Update readme.md

Removed second Payment example. One already exists which makes the last one redundant.
Merge pull request #226 from czogori/master

Remove nonexistent names in Polish provider
Merge pull request #235 from Garbee/readme-patch

Update readme.md
Merge pull request #197 from jpetitcolas/optional_onetoone

[WIP] Issue with one-to-one nullable relationship