bump nan@1.7.0, fixes #82, h/t @mattcollier
bump nan@1.7.0, fixes #82, h/t @mattcollier

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