Add proper 1000G phase 3

[swvanderlaan]

We can also add in 1000G phase 1 and phase 3 via 1000 Genomes website's original VCFs. These should be converted to PLINK PED-files, and subsequently binary files.

Check out:

http://www.internationalgenome.org/faq/can-i-convert-vcf-files-plinkped-format/

[swvanderlaan]

1000G is now fully supported with the following super-populations:

• PAN
• EUR
• AFR
• AMR
• EAS
• SAS

The appropriate PLINK-formatted binary files are made, including the .INFO.txt.gz, .FREQ.txt.gz, and the .FUNC.txt.gz files.