fixes (#660)

* fixed limit variable ordering in the comments

* Expand readme on autoreconnect and multipe connections usage

Author: avbdr

readme.md

@@ -78,6 +78,12 @@ If no table prefix were set during object creation its possible to set it later
 $db->setPrefix ('my_');
 ```
 
+If connection to mysql will be dropped Mysqlidb will try to automatically reconnect to the database once. 
+To disable this behavoir use
+```php
+$db->autoReconnect = false;
+```
+
 If you need to get already created mysqliDb object from another class or function use
 ```php
     function init () {
@@ -92,6 +98,24 @@ If you need to get already created mysqliDb object from another class or functio
     }
 ```
 
+### Multiple database connection
+If you need to connect to multiple databases use following method:
+```php
+$db->addConnection('slave', Array (
+                'host' => 'host',
+                'username' => 'username',
+                'password' => 'password',
+                'db'=> 'databaseName',
+                'port' => 3306,
+                'prefix' => 'my_',
+                'charset' => 'utf8')
+);
+```
+To select database use connection() method
+```php
+$users = $db->connection('slave')->get('users');
+```
+
 ### Objects mapping
 dbObject.php is an object mapping library built on top of mysqliDb to provide model representation functionality.
 See <a href='dbObject.md'>dbObject manual for more information</a>