added a picard .dict and bwa index files of the sample genome

[greenkidneybean]

adding some files that hung me up when running the snakemake workflow dna-seq-gatk-variant-calling, hope this will help other folks get up and running, but rules should probably be added that do the following:

bwa index -a bwtsw genome.chr21.fa java -jar $PICARDJARPATH/picard.jar CreateSequenceDictionary R= genome.chr21.fa

[johanneskoester]

This happens here. But indeed, the workflow could have rules for that as well.