add updated 1000Genomes sample list
add updated 1000Genomes sample list

- after removing samples that failed QC because of poor coverage, we
  want to find more samples for each population
- goal is to have 25 to 30 samples for each population
- this file is the results of running the preprocessing script after
  excluding the failed runs

dpastling/plethora,dpastling/plethora,dpastling/cnv_pipeline,dpastling/plethora,dpastling/cnv_pipeline