BUG: Not all macOS machines have a $DISPLAY set (#122)
BUG: Not all macOS machines have a $DISPLAY set (#122)

Fixes #121.
gregcaporaso/q2cli,jakereps/q2cli,jakereps/q2cli,qiime2/q2cli,jairideout/q2cli,gregcaporaso/q2cli,jairideout/q2cli,qiime2/q2cli