New formula for kalign-2.04

Kalign is a fast, accurate multiple sequence alignment program,
similar to clustalw.
Homepage: http://msa.sbc.su.se/
Publication: http://www.ncbi.nlm.nih.gov/pubmed/19103665

I maintain a project called reciprocal smallest distance (https://github.com/todddeluca/reciprocal_smallest_distance) which depends upon NCBI BLAST, PAML, and Kalign.  This formula enables me (or any of my project users) to install kalign using homebrew.

Regards,
Todd