change Node.js v4.x.x prerequisite to Node.js v6.9.1
change Node.js v4.x.x prerequisite to Node.js v6.9.1
Storj/core,aleitner/core,retrohacker/core,orcproject/orc,gordonwritescode/storj-core,Storj/node-storj,bookchin/orc,bookchin/orc,orcproject/orc