Add missing peerdependency to fix build for node 4
Add missing peerdependency to fix build for node 4

MissLoveWu/webvowl,VisualDataWeb/WebVOWL,VisualDataWeb/WebVOWL,leshek-pawlak/WebVOWL,leshek-pawlak/WebVOWL,MissLoveWu/webvowl