Added ref to conda+OMICtools, yamllinting

Reference:

 - Author: Mikhail Kolmogorov and Joel Armstrong and Brian J. Raney and Ian Streeter and Matthew Dunn and Fengtang Yang and Duncan Odom and Paul Flicek and Thomas M. Keane and David Thybert and Benedict Paten and Son Pham

   Title: "Chromosome assembly of large and complex genomes using multiple references"

 - Author: >

    Mikhail Kolmogorov and Joel Armstrong and Brian J. Raney and Ian Streeter

    and Matthew Dunn and Fengtang Yang and Duncan Odom and Paul Flicek and

    Thomas M. Keane and David Thybert and Benedict Paten and Son Pham

   Title: >

    Chromosome assembly of large and complex genomes using multiple references

   Journal: Genome Research

   Year: 2018

   Volume: 28

   DOI: 10.1093/bioinformatics/btu280

   PMID: 24931998

   URL: https://academic.oup.com/bioinformatics/article/30/12/i302/388572

   eprint: https://academic.oup.com/bioinformatics/article-pdf/30/12/i302/1097844/btu280.pdf

   eprint: "https://academic.oup.com/bioinformatics/article-pdf/\

    30/12/i302/1097844/btu280.pdf"

Registry:

 - Name: conda:bioconda

   Entry: ragout

 - Name: OMICtools

   Entry: OMICS_07883