Created Read queriedContext (markdown)

Read-queriedContext.md

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+The queried context is defined via `PARAMETERS` and can be accessed via `$this->queriedContext`.
+It provides a way to identify which context the bridge is called with.
+
+Example:
+
+```PHP
+...
+	const PARAMETERS = array(
+		'By user name' => array(
+			'u' => array('name' => 'Username')
+		),
+		'By user ID' => array(
+			'id' => array('name' => 'User ID')
+		)
+	);
+
+...
+```
+
+In this example `$this->queriedContext` will either return **By user name** or **By user ID**. The queried context might return no value, so the best way to handle it is by using a case-structure:
+
+```PHP
+switch($this->queriedContext){
+	case 'By user name':
+		break;
+	case 'By user ID':
+		break;
+	default: // Return default value
+}
+```