Complete text response type with comment

Author: g105b

src/Response/Text.php

@@ -1,6 +1,12 @@
 <?php
 namespace Gt\Fetch\Response;
 
+/**
+ * This class represents a string response. The reason it wraps a string with an
+ * object is to allow for the same code to construct any type of response, and
+ * in turn means that the Gt\Fetch\Response namespace is a good reference for
+ * the types of response possible.
+ */
 class Text {
 	/** @var string */
 	protected $content;