Composer php unit install and composer.json update

www/vendor/sebastian/cli-parser/README.md

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+# sebastian/cli-parser
+
+Library for parsing `$_SERVER['argv']`, extracted from `phpunit/phpunit`.
+
+## Installation
+
+You can add this library as a local, per-project dependency to your project using [Composer](https://getcomposer.org/):
+
+```
+composer require sebastian/cli-parser
+```
+
+If you only need this library during development, for instance to run your project's test suite, then you should add it as a development-time dependency:
+
+```
+composer require --dev sebastian/cli-parser
+```