+ add minimal documentation

Signed-off-by: Christoph Potas <[email protected]>

Author: puschie286

user_guide_src/source/general/configuration.rst

@@ -11,11 +11,18 @@ create an instance of the class and all your settings are there for you.
 Accessing Config Files
 ======================
 
-You can access config files within your classes by creating a new instance. All of the properties
+You can access config files within your classes by creating a new instance or using the config function. All of the properties
 are public, so you access the settings like any other property::
 
+	// Creating new class by hand
 	$config = new \Config\EmailConfig();
 
+	// Creating new class with config function
+	$config = config( 'EmailConfig', false );
+
+	// Get shared instance with config function
+	$config = config( 'EmailConfig' );
+
 	// Access settings as class properties
 	$protocol = $config->protocol;
 	$mailpath = $config->mailpath;