added Makefile for downloading and installing miniconda and snakemake.
added Makefile for downloading and installing miniconda and snakemake.

EichlerLab/pacbio_variant_caller,EichlerLab/pacbio_variant_caller,EichlerLab/pacbio_variant_caller,EichlerLab/pacbio_variant_caller,EichlerLab/pacbio_variant_caller