Fixing failing Travis-CI tests on io.js. Attempt 1.
Fixing failing Travis-CI tests on io.js. Attempt 1.

skaapgif/stampit,rektide/stamp-this,BerkeleyTrue/stampit,stampit-org/stampit,stampit-org/stampit,kwangkim/stampit,stampit-org/stampit,imdwit/stampit