Clean before building in the travis script.
Clean before building in the travis script.

roecrew/AudioKit,dclelland/AudioKit,roecrew/AudioKit,catloafsoft/AudioKit,catloafsoft/AudioKit,laurentVeliscek/AudioKit,narner/AudioKit,roecrew/AudioKit,laurentVeliscek/AudioKit,roecrew/AudioKit,laurentVeliscek/AudioKit,dclelland/AudioKit,narner/AudioKit,narner/AudioKit,dclelland/AudioKit,catloafsoft/AudioKit,laurentVeliscek/AudioKit,narner/AudioKit,catloafsoft/AudioKit,dclelland/AudioKit