Symfony 3 support + fixes

[ghost]

I've been using this fork for 3 weeks now and it works just fine.

Please merge this so that Symfony 3 support is added.

[ghost]

@bezhermoso Please merge this so that we can use this on Symfony 3 without having to mess around with composer.

[vsmoraes]

👍 we need this

[IlyaPokamestov]

@bezhermoso @jwestman-activelamp @tomfriedhof guys what should be done to merge this one? I can continue this PR if that needed.
Thanks!

[bezhermoso]

Hi all,

I haven't checked up on this repo for quite a while now. I will take a closer look at issues/PRs early December; I'd like to get this upgraded for Symfony 3 as well. This might have to wait until after we get the Travis builds in place and have the test pass again. What do you guys think?

[vsmoraes]

Awesome! I'm working on a brand new project and soon this feature will be a necessary. You can count on me if any kind of help is needed o/

[ghost]

@bezhermoso It would be good to have Travis in place, but this merge is pretty important in my opinion. I've been using this fork for a while now, but I prefer to use the original repo (which I can only do once this PR has been merged / this project has been upgraded to Symfony3).