change server names to production.
Merge branch 'master' of https://github.com/tonydisera/vcf.iobio.io

# By Chase Miller
# Via Chase Miller
* 'master' of https://github.com/tonydisera/vcf.iobio.io:
  add CNAME
Change to production server names.  Use linear index to show variant density (for local vcf files)