grammar -> tm, made root path an optional arg
grammar -> tm, made root path an optional arg

thammegowda/incubator-joshua,thammegowda/incubator-joshua,lukeorland/joshua,thammegowda/incubator-joshua,thammegowda/incubator-joshua,lukeorland/joshua,fhieber/incubator-joshua,thammegowda/incubator-joshua,thammegowda/incubator-joshua,thammegowda/incubator-joshua,lukeorland/joshua,thammegowda/incubator-joshua,fhieber/incubator-joshua,fhieber/incubator-joshua,thammegowda/incubator-joshua,fhieber/incubator-joshua,lukeorland/joshua,fhieber/incubator-joshua,lukeorland/joshua,thammegowda/incubator-joshua,fhieber/incubator-joshua,lukeorland/joshua,lukeorland/joshua,lukeorland/joshua,lukeorland/joshua,fhieber/incubator-joshua,fhieber/incubator-joshua,fhieber/incubator-joshua