[BioRuby] Bio-vcf

[Pjotr Prins]

Hi everyone,

The bio-vcf tool can now parse and output VCF header information. A
JSON output example can be found at:

  https://github.com/pjotrp/bioruby-vcf/blob/master/test/data/regression/vcf2json_full_header.ref

RDF and other formats should be possible too. To parse the header I
used a ragel lexer, so as to support embedded quoting. It works great.

I'll release a gem soon.

HNY!

Pj.