Just a basic fix for #304. Without this, Node >=7.0.0 prints the following warning to console:
(node:9443) DeprecationWarning: Using Buffer without `new` will soon stop working. Use `new Buffer()`, or preferably `Buffer.from()`, `Buffer.allocUnsafe()` or `Buffer.alloc()` instead.
Just a basic fix for #304. Without this, Node >=7.0.0 prints the following warning to console: