List options in README

Author: wasinger

LICENSE

@@ -1,4 +1,4 @@
-Copyright (c) 2015-2018 Christoph Singer, Web-Agentur 72
+Copyright (c) 2015-2025 Christoph Singer
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

README.md

@@ -45,6 +45,26 @@ $output = $pm
 
 For prettyprinting, call the `indent()` method instead of `minify()`.
 
+
+The `PrettyMin()` constructor can be given an associative options array. Here are the possible option keys and their default values:
+```
+    'minify_js' => true,
+    'minify_css' => true,
+    'remove_comments' => true,
+    'remove_comments_exeptions' => ['/^\[if /'],
+    'keep_whitespace_around' => [
+        // keep whitespace around all inline elements
+        'b', 'big', 'i', 'small', 'tt',
+        'abbr', 'acronym', 'cite', 'code', 'dfn', 'em', 'kbd', 'strong', 'samp', 'var',
+        'a', 'bdo', 'br', 'img', 'map', 'object', 'q', 'span', 'sub', 'sup',
+        'button', 'input', 'label', 'select', 'textarea'
+    ],
+    'keep_whitespace_in' => ['script', 'style', 'pre'],
+    'remove_empty_attributes' => ['style', 'class'],
+    'indent_characters' => "\t"
+```
+
+
 **Attention**: Because the formatting is done directly on the DOM tree, a DOMDocument object given to the `load()` method
 will be modified: