Use the snvs.hq.tier1.v1.annotated.top file if snvs.hq.tier1.v1.annotated.top.header doesn't exist
Updated `genome` tab completion.
Updated `gmt` tab completion.
Merge pull request #310 from susannasiebert/epitope_prediction

Use alternate snvs file if snvs.hq.tier1.v1.annotated.top.header doesn't exist