Attempt to fix travis tests on Node 0.7.
Attempt to fix travis tests on Node 0.7.

fotinakis/testem,paulot/testem,paulot/testem,bradleylandis/testem,johanneswuerbach/testem,johanneswuerbach/testem,testem/testem,testem/testem,johanneswuerbach/testem,Addepar/testem,testem/testem,Addepar/testem,bradleylandis/testem,bradleylandis/testem,fotinakis/testem,Addepar/testem,fotinakis/testem,Addepar/testem,paulot/testem