Tweak composer.json suggest as this is not really part of Orchestra Platform.

Signed-off-by: crynobone <crynobone@gmail.com>
Add note regarding PSR-2.

Signed-off-by: crynobone <crynobone@gmail.com>
Add scrutinizer badge.

Signed-off-by: crynobone <crynobone@gmail.com>