An example FTP server build on top of go-raval. graval handles the details
of the FTP protocol, we just provide a basic in-memory persistence driver.
If you're looking to create a custom graval driver, this example is a
reasonable starting point. I suggest copying this file and changing the
function bodies as required.
USAGE:
go get github.com/yob/graval
go install github.com/yob/graval/graval-mem
./bin/graval-mem