updated consistent name request and response in MiddlewareAwareTrait

[ghost]

Hi all,
as discussed briefly here #2133. I'd like to make more consistent use of the variables names, also and specifically $request and $response, instead of using sometimes those and sometimes $req and $res.

[coveralls]

Coverage remained the same at 97.928% when pulling eafabd4 on 0x13a:consistent-name-request-response into fb5356a on slimphp:3.x.

[coveralls]

Coverage remained the same at 97.928% when pulling 0e4f580 on 0x13a:consistent-name-request-response into fb5356a on slimphp:3.x.

[coveralls]

Coverage increased (+0.003%) to 97.931% when pulling 7869ac1 on 0x13a:consistent-name-request-response into fb5356a on slimphp:3.x.

[ghost]

yes, i need to setup the psr2 sniffer.. Anyway ready to merge @akrabat

[tuupola]

To check for PSR-2 run either $ composer phpcs or $ vendor/bin/phpcs in Slim folder.

https://github.com/slimphp/Slim/blob/3.x/composer.json#L55

[ghost]

thanks @tuupola