added configuration for PHP Coding Standards Fixer, including its fixes, resolving #47

.php_cs

@@ -0,0 +1,23 @@
+<?php
+/**
+ * Configuration file for PHP Coding Standards Fixer (php-cs-fixer).
+ *
+ * On GitHub: https://github.com/FriendsOfPhp/php-cs-fixer
+ * More information: http://cs.sensiolabs.org/
+ */
+
+$finder = Symfony\CS\Finder\DefaultFinder::create()
+    ->in('lib')
+;
+
+return Symfony\CS\Config\Config::create()
+    ->level(Symfony\CS\FixerInterface::PSR2_LEVEL)
+    ->fixers(['concat_with_spaces', 'long_array_syntax', 'standardize_not_equal',
+              'operators_spaces', 'duplicate_semicolon',
+              'remove_leading_slash_use', 'align_equals',
+              'single_array_no_trailing_comma', 'phpdoc_indent', 'phpdoc_scalar',
+              'phpdoc_to_comment', 'phpdoc_trim',
+              'phpdoc_types', 'print_to_echo', 'self_accessor', 'single_quote',
+              'spaces_cast', 'ternary_spaces', 'phpdoc_order'])
+    ->finder($finder)
+;