Remove Ruby 2.0 and 2.1 builds from Travis config
Remove Ruby 2.0 and 2.1 builds from Travis config

openSNP/snpr,vivekiitkgp/snpr,gedankenstuecke/snpr,gedankenstuecke/snpr,philippbayer/snpr,philippbayer/snpr,openSNP/snpr,vivekiitkgp/snpr,openSNP/snpr,openSNP/snpr,gedankenstuecke/snpr,philippbayer/snpr,vivekiitkgp/snpr,philippbayer/snpr,gedankenstuecke/snpr,vivekiitkgp/snpr