Support for extension installer

Author: ondrejmirtes

composer.json

@@ -4,6 +4,7 @@
 	"license": [
 		"MIT"
 	],
+	"type": "phpstan-extension",
 	"require": {
 		"php": "~7.1",
 		"nikic/php-parser": "^4.0",
@@ -24,6 +25,11 @@
 	"extra": {
 		"branch-alias": {
 			"dev-master": "0.11-dev"
+		},
+		"phpstan": {
+			"includes": [
+				"rules.neon"
+			]
 		}
 	},
 	"autoload": {