Silence mocha deprecation warning.
Silence mocha deprecation warning.

require babel-core, rather than using now-deprecated compilers directive

tomalrussell/smif,tomalrussell/smif,nismod/smif,nismod/smif,willu47/smif,tomalrussell/smif,tomalrussell/smif,nismod/smif,willu47/smif,willu47/smif,willu47/smif,nismod/smif