added instructions for getting started and running tests
added instructions for getting started and running tests

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