upstream fixes, simplified controller resolving

[digitalkaoz]

fixed composer deps

now the controllers stay untouched, it means normal symfony request and response.
the converting is done in the application itself.

although the react request/response are available as request attributes.

[igorw]

Using symfony request/response here basically eliminates the advantage of using react in the first place, which is the ability to stream responses.

Also, please note that this project is a proof of concept and not really intended for production use.

[digitalkaoz]

the react request and reponse objects are still available as request attributes. most of the time you wont stream line by line, but if your willing to you can.

and yes i know its a POC ;) but i really like how easy it is to switch your silex app to a react socket approach (and see 5times the speed ;) ) with this PR