Fix possible PDO Unknown database error

This patches a possible `Unable to open PDO connection [wrapped: SQLSTATE[42000] [1049] Unknown database '<db_name>']` when the dsn is not ending with a `;`.
Related to #159

Command/DatabaseCreateCommand.php

@@ -77,12 +77,12 @@ class DatabaseCreateCommand extends AbstractCommand
      * @param  array  $config A Propel connection configuration.
      * @return array
      */
-    private function getTemporaryConfiguration($name, $config)
+    protected function getTemporaryConfiguration($name, $config)
     {
         $dbName = $this->parseDbName($config['connection']['dsn']);
 
         $config['connection']['dsn'] = preg_replace(
-            '#dbname='.$dbName.';#',
+            '#dbname='.$dbName.'(;|$)#',
             '',
             $config['connection']['dsn']
         );