Added double section, escaped output, utf8 escaped and utf8 unescaped examples.

examples/utf8/UTF8.php

@@ -0,0 +1,5 @@
+<?php
+
+class UTF8Unescaped extends Mustache {
+	public $test = '中文又来啦';
+}

examples/utf8/utf8.mustache

@@ -0,0 +1 @@
+<h1>中文 {{test}}</h1>

examples/utf8/utf8.txt

@@ -0,0 +1 @@
+<h1>中文 中文又来啦</h1>