Dependency chain preventing use on node 6 - get rid of bufferjs all the way at the bottom

[anyong]

node-slug > unicode > bufferstream > bufferjs

bufferjs last updated 4 years ago, it adds all of ~90 apparently deprecated lines of code. @dodo since you are managing all the packages between this and that, is there any reason you can't simply include something else? My entire app failing to install because of slug (because of unicode (because of bufferstream (because of bufferjs))) is pretty annoying =/

coolaj86/node-bufferjs#13

[Zertz]

bufferjs has been updated, it should work now