Added Bulgarian language files

Signed-off-by: Roumen Damianoff <roumen@dawebs.com>

application/language/bg/pagination.php

@@ -0,0 +1,19 @@
+<?php 
+
+return array(
+
+	/*
+	|--------------------------------------------------------------------------
+	| Pagination Language Lines
+	|--------------------------------------------------------------------------
+	|
+	| The following language lines are used by the paginator library to build
+	| the pagination links. You're free to change them to anything you want.
+	| If you come up with something more exciting, let us know.
+	|
+	*/
+
+	'previous' => '&laquo; Назад',
+	'next'     => 'Напред &raquo;',
+
+);