updated VENDORS for 2.0.13
updated vendors to dev branches
updated VENDORS for 2.0.14
updated vendors to dev branches
updated VENDORS for 2.0.15
updated vendors to dev branches
updated Swiftmailer to 4.2.0
simplified code
updated deps
updated vendors
Update bin/vendors
Update bin/vendors
Extra spaces removed in bin/vendors
[Acme] Highlight code block in demo pages
Remove specific autoloading part to reflect latest Symfony master
updated VENDORS for 2.0.17
updated vendors to dev branches
Add more verbose warning for PHP 5.3.16

There was some confusion about the PHP 5.3.16 warning because 5.3.17 is not yet released.
Added a bit more info to clear things up.
Add reference to PHP bug #62874 for 5.3.16 requirement
Fixed an issue with installs from composer not working due to version conflict on symfony/symfony