update travis node version
update travis node version

Pyrotoxin/clappr,clappr/clappr,jfairley/clappr,dayvson/clappr,irongomme/clappr,Metrakit/clappr,Pyrotoxin/clappr,irongomme/clappr,jfairley/clappr,wxmfront/clappr,clappr/clappr,shakin/clappr,Pyrotoxin/clappr,dayvson/clappr,Metrakit/clappr,burakkp/clappr,flavioribeiro/clappr,shakin/clappr,clappr/clappr,MariadeAnton/clappr,irongomme/clappr,burakkp/clappr,MariadeAnton/clappr,Metrakit/clappr,wxmfront/clappr,shakin/clappr,jfairley/clappr,MariadeAnton/clappr,flavioribeiro/clappr,wxmfront/clappr,burakkp/clappr,dayvson/clappr,flavioribeiro/clappr