Added default language pack (en-gb)

catalog/extension/shipping/parcelforce_48.php

@@ -0,0 +1,7 @@
+<?php
+// Text
+$_['text_title']       = 'Parcelforce 48';
+$_['text_description'] = 'Parcelforce 48';
+$_['text_weight']      = 'Weight:';
+$_['text_insurance']   = 'Insured upto:';
+$_['text_time']        = 'Estimated Time: Within 48 Hours';