http://www.broadinstitute.org/igvdata/annotations/hg18/hg18_annotations.xml
http://www.broadinstitute.org/igvdata/tcga_external.xml
http://www.broadinstitute.org/igvdata/mmgp.xml
http://www.broadinstitute.org/igvdata/epigenetics_public.xml
http://www.broadinstitute.org/igvdata/1KG/1KG.xml
http://trackhub.genome.duke.edu/reddylab/collab/CRISPR_TypeI/crispr_type1.xml
http://trackhub.genome.duke.edu/reddylab/collab/CRISPR_TypeI/crispr_type1_structured.xml