Compatibility fix in delete function

php 5.3 does not support $object->getArray()['ArrayItem'] notation.
Updating contributing docs
Compatibility fix in delete function

php 5.3 does not support $object->getArray()['ArrayItem'] notation.
Fixed bug in Route::filter

Error when attempting to set the $configFactory variable:

Using $this when not in object context

Existing code used $this->app->make(); changed it to App::make()
Merge pull request #270 from jijoel/bug/compatibility

Compatibility fix in delete function
Merge pull request #271 from jijoel/bug/filter-object-context

Fixed bug in Route::filter