fix bower install on linux
fix bower install on linux

BrianAdams/openrov-cockpit,OpenROV/openrov-cockpit,spiderkeys/openrov-cockpit,spiderkeys/openrov-cockpit,BrianAdams/openrov-cockpit,spiderkeys/openrov-cockpit,OpenROV/openrov-cockpit,spiderkeys/openrov-cockpit,BrianAdams/openrov-cockpit,BrianAdams/openrov-cockpit,OpenROV/openrov-cockpit,BrianAdams/openrov-cockpit,spiderkeys/openrov-cockpit