recreate project

vendor/phpoffice/math/docs/install.md

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+# Installation
+
+## Requirements
+
+Mandatory:
+
+-  PHP 7.1+
+-  PHP [DOM extension](http://php.net/manual/en/book.dom.php)
+-  PHP [XML Parser extension](http://www.php.net/manual/en/xml.installation.php)
+-  PHP [XMLWriter extension](http://php.net/manual/en/book.xmlwriter.php)
+
+
+## Installation
+
+### Using Composer
+
+To install via [Composer](http://getcomposer.org), add the following lines to your `composer.json`:
+
+``` json
+{
+    "require": {
+        "phpoffice/math": "dev-master"
+    }
+}
+```