Upgraded to Hadoop-BAM 0.6.2/Picard 1.107.
Merge pull request #173 from hammerlab/vcfanno

Parse annotations out of vcf files
Merge pull request #178 from fnothaft/hadoop-bam-0.6.2

Upgraded to Hadoop-BAM 0.6.2/Picard 1.107.
start of a variant_stats command
set VariantType for SNPs in VariantContextConverter
basic VariantStats command implemented (SNV summary only)
fairly complete variant_stats command
Drop VariantType from ADAMVariant record; now computed in RichADAMVariant.

Update VariantsSummary command to work with this change.