Unclear format for Blacklist file

[praveenbm5]

Hello Ryan,

Kudos to you for this great project.

One small issue....

I tried many many ways of specifying the blacklisted features in the file (csv, tsv, json) before I found out that each feature id needs to be on a new line.

It should be specified somewhere in the read me file.

Also -nCores flag is not effective and defaults to 1 unless specified as the first option atleast with latest 1.1 go and Ubuntu 18.04