Leetcode-php (#728)

* Leetcode-php

* Delete workspace.xml

* Delete vcs.xml

* Delete codeStyleConfig.xml

* Delete wuqinqiang.xml

* Delete encodings.xml

* Delete misc.xml

* Delete free-programming-books-zh_CN.iml

* Delete modules.xml

README.md

@@ -675,6 +675,7 @@
 * [Slim 中文文档](http://ww1.minimee.org/php/slim)
 * [Lumen 中文文档](http://lumen.laravel-china.org/)
 * [PHPUnit 中文文档](https://phpunit.de/manual/current/zh_cn/installation.html)
+* [PHP-LeetCode](https://github.com/wuqinqiang/leetcode-php)
 
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