Add php artisan clear-compiled to post-install-cmd, as proposed in

laravel/framework#3152
Signed-off-by: crynobone <crynobone@gmail.com>

composer.json

@@ -18,6 +18,7 @@
 	},
 	"scripts": {
 		"post-install-cmd": [
+			"php artisan clear-compiled",
 			"php artisan optimize"
 		],
 		"post-update-cmd": [