Bump "Tested up to" to WordPress 4.2

Author: Viper007Bond

readme.txt

@@ -3,7 +3,7 @@ Contributors: Viper007Bond, automattic
 Donate link: http://www.viper007bond.com/wordpress-plugins/syntaxhighlighter/donate/
 Tags: code, sourcecode, php, xhtml, html, css, WordPress.com
 Requires at least: 2.7
-Tested up to: 4.1
+Tested up to: 4.2
 Stable tag: trunk
 
 Easily post syntax-highlighted code to your site without having to modify the code at all. As seen on WordPress.com.