New free Bulgarian wordnet,

Received from Kiril 2014-07-30

First line added by hand:
URL: 	http://www.bultreebank.org/
License:	CC BY 3.0

Citation: http://www.lrec-conf.org/proceedings/lrec2010/summaries/848.html

python bin/add-wn.py wns/bul/wn-data-bul.tab  bul btb-wn www/wn-multi.db
