Added HARDWARE_MOCK=true option info  to dev-howto
Added HARDWARE_MOCK=true option info  to dev-howto
OpenROV/openrov-cockpit,BrianAdams/openrov-cockpit,BrianAdams/openrov-cockpit,OpenROV/openrov-cockpit,OpenROV/openrov-cockpit,BrianAdams/openrov-cockpit,BrianAdams/openrov-cockpit,BrianAdams/openrov-cockpit