Since the distro of composer is already quite out of date, encourage users to maintain their own version of it.
Merge pull request #3 from neilferreira/composer

Since the distro of composer is already quite out of date, encourage use...
Moved SiteAccess matching to the chain router instead of inside a custom HttpKernel
Updated Twig to 1.8.3
Updated ezp-next submodule
Added missing note about installing deps back in.
Added note about where to install composer.
Merge pull request #4 from neilferreira/composer

Added missing note about installing deps back in.
Updated ezp-next submodule
Update INSTALL.md
Updated submodule
Updated submodule
Update GETTING_STARTED.md
Updated submodule
Fixed wrong variable in PHP example in GETTING_STARTED.md
Updated submodule
Added Zeta components System information as a dependency and updated dependencies
Updated Twig to 1.9.0
Fixed problem doctrine installation
Updated composer.lock