Bug fix: #24 (cofiguration prblms)

src/Muzich/CoreBundle/ElementFactory/lib/VideoEmbed.php

                 throw new exception ('This must be instantiated with a non empty embed code');
             }
         }
+        
         // load arguments
         $this->_embedSource = $embed;
         $this->_width = $width?$width: $this->_video_embed_conf['defaultWidth'];