Updated visibility from private to protected

Updated the visibility to be equal to HWI\Bundle\OAuthBundle\Security\Core\User\FOSUBUserProvider
Use `OAuthToken` instead of `UsernamePasswordToken` when authenticating user after registering in `ConnectController`
Correct casing of PHPUnit_Framework_Testcase to PHPUnit_Framework_TestCase so that autoloading works on case sensitive filesystems.
Update Resources/doc/3-configuring_the_security_layer.md

Point built-in user providers service names
Merge pull request #159 from elyobo/correct_casing

Correct casing of PHPUnit_Framework_Testcase to PHPUnit_Framework_TestCase
Merge pull request #162 from stloyd/patch-1

Update configuration chapter of documentation
Merge pull request #146 from jorns/patch-1

Updated visibility from private to protected
Merge pull request #128 from stloyd/connect_token

Use `OAuthToken` instead of `UsernamePasswordToken` when authenticating ...
Update .travis.yml

Added testing of PHP `5.3.3` & `5.5` at Travis-CI
Merge pull request #168 from stloyd/patch-1

Update .travis.yml
Update composer.json

Adjust required versions, added `branch-alias` for easier dev requirement
Merge pull request #169 from stloyd/patch-1

Update composer.json
Update OAuth/ResourceOwner/GenericOAuth1ResourceOwner.php

Fix compatibility with OAuth 1.0 Server
Added support for FOSUserBundle 1.3 and 2.x
Merge pull request #171 from daFish/fix/fosub-compatibility

Enable support for FOSUserBundle 1.x and 2.x
Extend tests for `GenericOAuth1ResourceOwner` & `LinkedinResourceOwnerTest`
Extend tests for `GenericOAuth2ResourceOwner` and extending classes
Extend tests for `SensioConnectResourceOwner` and fix recent change in uuid parsing
Merge pull request #173 from stloyd/feature/tests

Complete refactoring of tests!
Merge pull request #172 from stloyd/patch-1

Fix compatibility with OAuth 1.0 Server