This class reads and writes to the config/config.ini.php file. If config
options are missing from that file, this class will look for their default
values in config/global.ini.php.
### Examples
**Getting a value:**
read the minimum_memory_limit option under the [General] section
$minValue = Config::getInstance()->General['minimum_memory_limit'];
**Setting a value:**
set the minimum_memory_limit option
Config::getInstance()->General['minimum_memory_limit'] = 256;
Config::getInstance()->forceSave();
**Setting an entire section:**
Config::getInstance()->MySection = array('myoption' => 1);
Config::getInstance()->forceSave();