[travis] Post the code coverage report to coveralls
[travis] Post the code coverage report to coveralls

quangbuule/eventemitter3,pawsong/eventemitter3,primus/eventemitter3,primus/eventemitter3,joshbedo/eventemitter3,malyshevalex/eventemitter3,naoufal/eventemitter3,naoufal/eventemitter3,quangbuule/eventemitter3,primus/eventemitter3,joshbedo/eventemitter3,goatslacker/eventemitter3,marlun78/eventemitter3,malyshevalex/eventemitter3,pawsong/eventemitter3,marlun78/eventemitter3,goatslacker/eventemitter3