add php-cs-fixer config

config used to do previous commit (379feab)

.php_cs

@@ -0,0 +1,25 @@
+<?php
+
+$finder = Symfony\CS\Finder\DefaultFinder::create()
+	->in(__DIR__ . '/lib')
+;
+
+return Symfony\CS\Config\Config::create()
+	->level(Symfony\CS\FixerInterface::NONE_LEVEL)
+	->fixers(array(
+		'linefeed',
+		'trailing_spaces',
+		'unused_use',
+		'short_tag',
+		'return',
+		'visibility',
+		'php_closing_tag',
+		'extra_empty_lines',
+		'function_declaration',
+		'include',
+		'controls_spaces',
+		'elseif',
+		'-eof_ending',
+	))
+	->finder($finder)
+;