Merge pull request #1050 from hodory/master

Update README.md

README.md

@@ -376,6 +376,7 @@ Please see [CONTRIBUTING](https://github.com/ziadoz/awesome-php/blob/master/CONT
 * [PHPLOC](https://github.com/sebastianbergmann/phploc) - A tool for quickly measuring the size of a PHP project.
 * [PHPQA](https://github.com/EdgedesignCZ/phpqa) - A tool for running QA tools (phploc, phpcpd, phpcs, pdepend, phpmd, phpmetrics).
 * [Qafoo Quality Analyzer](https://github.com/Qafoo/QualityAnalyzer) - A tool to visualize metrics and source code.
+* [Rector](https://github.com/rectorphp/rector) - A tool to upgrade and refactor code.
 * [Scrutinizer](https://scrutinizer-ci.com/) - A web tool to [scrutinise PHP code](https://github.com/scrutinizer-ci/php-analyzer).
 * [UBench](https://github.com/devster/ubench) - A simple micro benchmark library.