Add back CLI code from our variant branch, unit tests, as well as adam2vcf code
Add concordance class and rich AdamGenotype class, and Genotype RDD functions class
Code review feedback
Merge branch 'vcf-work' into vcf-work-adam2vcf-and-cli
Merge branch 'vcf-work' into vcf-work-concordance-and-genotype
Merge pull request #150 from nealsid/vcf-work-adam2vcf-and-cli

Remaining variant changes for adam2vcf, unit tests, and CLI modifications
Merge pull request #151 from nealsid/vcf-work-concordance-and-genotype

Vcf work concordance and genotype