Add plottable.d.ts to master repo, per #98
Add plottable.d.ts to master repo, per #98

jacqt/plottable,alyssaq/plottable,softwords/plottable,RobertoMalatesta/plottable,onaio/plottable,danmane/plottable,onaio/plottable,alyssaq/plottable,RobertoMalatesta/plottable,softwords/plottable,palantir/plottable,palantir/plottable,NextTuesday/plottable,jacqt/plottable,gdseller/plottable,softwords/plottable,iobeam/plottable,NextTuesday/plottable,iobeam/plottable,gdseller/plottable,jacqt/plottable,palantir/plottable,danmane/plottable,palantir/plottable,alyssaq/plottable,RobertoMalatesta/plottable,danmane/plottable,onaio/plottable,gdseller/plottable,iobeam/plottable,NextTuesday/plottable