Added support for translations

Includes:
- Default (en_US)
- Portuguese Brazil (pt_BR)

init.php

@@ -41,6 +41,9 @@
 if ( ! defined( 'CMB_META_BOX_URL' ) )
 	define( 'CMB_META_BOX_URL', cmb_Meta_Box::get_meta_box_url() );
 
+// Load translation
+load_textdomain( 'cmb', trailingslashit( dirname(__FILE__) . '/lang' ) . get_locale() . '.mo' );
+
 $meta_boxes = array();
 $meta_boxes = apply_filters( 'cmb_meta_boxes', $meta_boxes );
 foreach ( $meta_boxes as $meta_box ) {