build: Add php-parallel-lint and MinusX

php-lint will test for valid php files
MinusX will test for executable bits

Change-Id: I2dfeb4eb2fba609f0d8677eef94551fd77fffb41

.gitignore

@@ -2,3 +2,5 @@
 *.kate-swp
 .*.swp
 node_modules/**
+vendor/**
+composer.lock

Gruntfile.js

@@ -10,7 +10,8 @@ module.exports = function ( grunt ) {
 		jsonlint: {
 			all: [
 				'**/*.json',
-				'!node_modules/**'
+				'!node_modules/**',
+				'!vendor/**'
 			]
 		}
 	} );

composer.json

@@ -0,0 +1,16 @@
+{
+	"require-dev": {
+		"jakub-onderka/php-parallel-lint": "0.9.2",
+		"jakub-onderka/php-console-highlighter": "0.3.2",
+		"mediawiki/minus-x": "0.2.0"
+	},
+	"scripts": {
+		"test": [
+			"parallel-lint . --exclude vendor --exclude node_modules",
+			"minus-x check ."
+		],
+		"fix": [
+			"minus-x fix ."
+		]
+	}
+}