Updates README.md

Author: kzykhys

README.md

@@ -1,9 +1,95 @@
 Pygments.php - A Thin Wrapper for the Python Pygments
 =====================================================
 
+A PHP wrapper for the Python Pygments syntax highlighter
+
 Requirements
 ------------
 
 * PHP5.3+
 * Python 2.4+
 * Pygments (`sudo easy_install Pygments`)
+
+Installation
+------------
+
+Create or update your composer.json and run `composer update`
+
+``` json
+{
+    "require": {
+        "kzykhys/pygments": ">=1.0"
+    }
+}
+```
+
+Usage
+-----
+
+### Highlight the source code
+
+``` php
+<?php
+
+use KzykHys\Pygments\Pygments;
+
+$pygments = new Pygments();
+$html = $pygments->highlight(file_get_contents('index.php'), 'php', 'html');
+$text = $pygments->highlight('package main', 'go', 'ansi');
+```
+
+### Generate a CSS
+
+``` php
+<?php
+
+use KzykHys\Pygments\Pygments;
+
+$pygments = new Pygments();
+$css = $pygments->getCss('monokai');
+$prefixedCss = $pygments->getCss('default', '.syntax');
+```
+
+### Guesses a lexer name
+
+``` php
+<?php
+
+use KzykHys\Pygments\Pygments;
+
+$pygments = new Pygments();
+$pygments->guessLexer('foo.rb'); // ruby
+```
+
+### Get a list of lexers/formatters/styles
+
+``` php
+<?php
+
+use KzykHys\Pygments\Pygments;
+
+$pygments = new Pygments();
+$pygments->getLexers()
+$pygments->getFormatters();
+$pygments->getStyles();
+```
+
+### Custom `pygmentize` path
+
+``` php
+<?php
+
+use KzykHys\Pygments\Pygments;
+
+$pygments = new Pygments('/path/to/pygmentize');
+```
+
+License
+-------
+
+The MIT License
+
+Author
+------
+
+Kazuyuki Hayashi (@kzykhys)