Host configuration fallback to router context
Example nginx server configuration added
Symfony 2.0 support dropped. Request context configuration is only available in Symfony 2.1+
[Minor] Nginx configuration example fixed
added branch alias master => 1.1.x
Merge pull request #22 from eymengunay/router-request-context

Host configuration fallback
corrected method call
Introduce testing using 'goutte' as optional clearing mode