Include string.h. fix Medium/ursa#49
Include string.h. fix Medium/ursa#49

darrenmce/ursa,quartzjer/ursa,quartzjer/ursa,davedoesdev/ursa,IbpTeam/node-ursa,IbpTeam/node-ursa,darrenmce/ursa,quartzjer/ursa,davedoesdev/ursa,mansona/ursa,davedoesdev/ursa,IbpTeam/node-ursa,mansona/ursa,mansona/ursa,darrenmce/ursa,mansona/ursa,IbpTeam/node-ursa,darrenmce/ursa