drop node v0.8.x support as certain deps are phasing it out.
drop node v0.8.x support as certain deps are phasing it out.

djchie/node-archiver,yavorski/node-archiver,soyuka/node-archiver,haledeng/node-archiver,archiverjs/node-archiver,lotterfriends/node-archiver,soyuka/node-archiver