Add blastn

Author: bgruening

packages.tsv

@@ -13,3 +13,4 @@ conda	cufflinks	2.2.1--py27_1	(cuffmerge --help 2>&1) | grep Options > /dev/null
 conda	tophat	2.1.0--py27_0	(tophat --version 2>&1) > /dev/null
 conda	curl	7.45.0--1	curl --fail icanhazip.com
 conda	bcftools	1.3--0	bcftools --version
+conda	blast	2.2.31--1	blastn -help