add php-cs-fixer config

.php_cs.dist

@@ -0,0 +1,15 @@
+<?php
+$finder = PhpCsFixer\Finder::create()
+	->exclude('vendor')
+	->in(__DIR__)
+;
+return PhpCsFixer\Config::create()
+	->setRules([
+		'@PSR2' => true,
+		'array_syntax' => ['syntax' => 'short'],
+		'braces' => ['position_after_functions_and_oop_constructs' => 'same'],
+		'binary_operator_spaces' => ['align_double_arrow' => true, 'align_equals' => false],
+	])
+	->setIndent("\t")
+	->setFinder($finder)
+	;