Baby is making her way across the United States. “ Dirty Dancing : The Musical,” a stage adaptation of the beloved 1987 romantic drama, is embarking on a North American tour. It will launch this August in Saint Paul, Minn., at the Ordway Center for the Performing Arts. Additional tour cities and casting will be announced at a later date. The movie, which introduced the line “nobody puts Baby in a corner” in the cultural lexicon, follows Frances “Baby” Houseman (Jennifer Grey), a young woman who