Since opening in 2015, Grain Craft Bar + Kitchen has been on a roll. The first location is on Main Street in Newark. But in quick succession, owners Lee Mikles and Jim O’Donoghue of OMG Hospitality debuted Grain H20 in Summit North Marina in Bear and a second Grain Craft Bar + Kitchen in Kennett Square. Grain on the Rocks at the Cape May-Lewes …