Added Help to Couchdb and Predis drivers

Author: Geolim4

src/phpFastCache/Drivers/Couchdb/Driver.php

@@ -230,6 +230,19 @@ protected function createDatabase()
      *
      *******************/
 
+    /**
+     * @return string
+     */
+    public function getHelp()
+    {
+        return <<<HELP
+<p>
+To install the Couchdb HTTP client library via Composer:
+<code>composer require "doctrine/couchdb" "@dev"</code>
+</p>
+HELP;
+    }
+
     /**
      * @return DriverStatistic
      */

src/phpFastCache/Drivers/Predis/Driver.php

@@ -141,6 +141,20 @@ protected function driverConnect()
      *
      *******************/
 
+
+    /**
+     * @return string
+     */
+    public function getHelp()
+    {
+        return <<<HELP
+<p>
+To install the Predis library via Composer:
+<code>composer require "predis/predis" "~1.1.0"</code>
+</p>
+HELP;
+    }
+
     /**
      * @return DriverStatistic
      */