Merge branch 'feature/externalconnection' into develop

README.md

@@ -392,7 +392,7 @@ You can also store inline query and chosen inline query in the database.
 Is possible to provide to the library an external mysql connection. Here's how to configure it:
 
 ```php
-$telegram->enableExternalMySQL($external_pdo_connection)
+$telegram->enableExternalMysql($external_pdo_connection)
 //$telegram->enableExternalMySQL($external_pdo_connection, $table_prefix)
 ```
 ### Channels Support

src/DB.php

@@ -110,7 +110,7 @@ class DB
             throw new TelegramException('MySQL external connection not provided!');
         }
 
-        self::$pdo = $pdo;
+        self::$pdo = $external_pdo_connection;
         self::$telegram = $telegram;
         self::$mysql_credentials = null;
         self::$table_prefix = $table_prefix;

src/Telegram.php

@@ -188,7 +188,7 @@ class Telegram
      * @param PDO    $external_pdo_connection PDO database object
      * @param string $table_prefix
      */
-    public function enableExternalMySQL($external_pdo_connection, $table_prefix = null)
+    public function enableExternalMysql($external_pdo_connection, $table_prefix = null)
     {
         $this->pdo = DB::externalInitialize($external_pdo_connection, $this, $table_prefix);
         $this->mysql_enabled = true;