I have noticed that word  "weryfikacja" confuses user (they look for captcha), i propose "Powtórz hasło" like it is for example in  onet.pl registration form https://konto.onet.pl/register-email.html?app_id=107 
maybe this should be consulted with @jacobmaster
Update Resources/translations/FOSUserBundle.pl.yml
letter case change
Merge pull request #485 from wodor/patch-1

Change "repeat password"  in polish translation
Don't authenticate locked or disabled users. See #464
Added a mailer able to use twig blocks for the each part of the message

It expects the template to define 3 blocks: subject, body_text and
body_html. The existing templates have been refactored to define these
blocks, but maintaining BC with the other mailer implementation and don't
provide the html body.
The new mailer is not used by default to maintain BC as it requires using
Twig for the templates. You can switch to it with this config:

fos_user:
    service:
        mailer: fos_user.mailer.twig_swift
Added Twig and Swiftmailer in the vendors
Updated the translations for other languages
Added some doc for the new mailer
Fixed the doc
Changed line 439, typo fix "Step 4".
Maybe it's better to configure the FOSUserBundle (Step 6) before create the User Class (Step 4) so you can generate the new UserBundle via "php app/console generate:bundle --namespace=Acme/UserBundle" without errors coming from FOSUserBundle missing configuration in config.yml.
Merge pull request #488 from matteopoile/patch-1

Changed line 439, typo fix "Step 4".
Merge pull request #486 from FriendsOfSymfony/forbid_auth_locked

Don't authenticate locked or disabled users.
Closes #464
Merge pull request #487 from FriendsOfSymfony/twig_based_mailer

Twig based mailer
Updated the symfony version for travis
Made the vendors.php script fail when a deps cannot be fetched
fix config
Merge pull request #492 from gimler/fix_email_doc

fix config example
[User] Added unit testing for confirmation token logic
Added a public alias for the user checker

The original service is private and so cannot be retrieved at runtime
in the controllers.