phpDocumentor script added.

composer.json

@@ -21,12 +21,14 @@
     "url": "https://www.paypal.me/syslogic"
   }],
   "scripts": {
+    "docs": "phpDocumentor.phar",
     "test": "vendor/bin/phpunit --bootstrap vendor/autoload.php --configuration phpunit.xml --testsuite main",
     "start": [ "Composer\\Config::disableProcessTimeout", "FUNCTION_TARGET=on_https php -S localhost:${PORT:-8081} vendor/bin/router.php" ],
     "coverage_linux": "export XDEBUG_MODE=coverage && vendor/bin/phpunit --bootstrap vendor/autoload.php --configuration coverage.xml --testsuite main",
     "coverage_windows": "setlocal xdebug.mode=coverage && %cd%/vendor/bin/phpunit --bootstrap vendor/autoload.php --configuration coverage.xml --testsuite main"
   },
   "scripts-descriptions": {
+    "docs": "Generate docs",
     "test": "Run PHPunit tests",
     "start": "Call function on_https",
     "coverage_linux": "Run PHPUnit tests with code coverage on Linux",

phpdoc.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<phpdocumentor
+    configVersion="3"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xmlns="https://www.phpdoc.org"
+    xsi:noNamespaceSchemaLocation="https://raw.githubusercontent.com/phpDocumentor/phpDocumentor/master/data/xsd/phpdoc.xsd">
+    <paths>
+        <output>build/docs</output>
+        <cache>build/cache</cache>
+    </paths>
+    <version number="3.0.0">
+        <api>
+            <source dsn=".">
+                <path>src</path>
+            </source>
+        </api>
+    </version>
+</phpdocumentor>