Added ability to read the configuration values in the initialisation file and added comments

Config.php

<?php
class Config {
	//$path is the value that going to be pass thought for exmaple "Config::get('mysql/host')" the part 'mysql/host' will be the path.
	public static function get($path = null){
		if($path) {
			//$config make it easier to write $GLOBALS['config'];
			$config = $GLOBALS['config'];
			// Explode will read each value in parts using the forward slash for example mysql/host mysql is first part and host is the seconned part.
			$path = explode('/', $path);
			// For every value in $path will be store in a variable called $bit
			foreach($path as $bit){
				//This will check if the value is set in the initialisation file (init.php); 
				if(isset($config[$bit])){
					// After the checked if the value isset then it will store value in variable called $config
					$config = $config[$bit];
				}
			}
			//This will return the value that is set.
			return $config;
		}
		// If there no value set then i will return false
		return false;
	}
}
?>