added support for BCrypt Encoder
fix constructor parameters for BCryptPasswordEncoder in Symfony 2.3
added support for pbkdf2 Encoder
merged smottt/FOSAdvancedEncoderBundle for adding bcrypt

Conflicts:
	DependencyInjection/Configuration.php
	DependencyInjection/FOSAdvancedEncoderExtension.php
	Tests/DependencyInjection/FOSAdvancedEncoderExtensionTest.php
Merge pull request #10 from marc-f/master

Added bcrypt and pbkdf2 encoder support

Closes #7