IMGAPI-248: get the latest node-manta, just because
IMGAPI-248: get the latest node-manta, just because

numericillustration/sdc-imgapi,numericillustration/sdc-imgapi,numericillustration/sdc-imgapi,joyent/sdc-imgapi,joyent/sdc-imgapi,joyent/sdc-imgapi