Updated Travis to right node version
Updated Travis to right node version

BrianAdams/openrov-software,ZonaElka/testOpenROV,BrianAdams/openrov-software,codewithpassion/openrov-software,BrianAdams/openrov-software,ZonaElka/testOpenROV,ZonaElka/testOpenROV,codewithpassion/openrov-software,BrianAdams/openrov-software,codewithpassion/openrov-software,codewithpassion/openrov-software