[Routing] Adding in a hasParam() method to the routing helper.
Merge branch 'master' of git://github.com/ppi/framework
Fixes #73 - change requirement of Symfony components from @beta to @stable

Conflicts:
	composer.json
Add method getHelper() to Smarty AssetsExtension
Add Http\Response and Http\ResponseInterface

Conflicts:
	PPI/ServiceManager/Factory/ResponseFactory.php
Add Http component with a RequestInterface implemented by Request classes (PSR HttpRequest)
Fix broken link to docs
Merge pull request #89 from Danizord/patch-1

Fix broken link to docs
Merge remote-tracking branch 'upstream/master'
Fixing a dispatch bug where you can't return a symfony Response object directly from the controller action
Merge branch 'master' into 2.1

Conflicts:
	PPI/App.php
	PPI/Http/Request.php
	PPI/Http/RequestInterface.php
	PPI/Http/Response.php
	PPI/Http/ResponseInterface.php
	composer.json
Change doc link to "2.1" instead of "2.0"