go - minimalistic uri shortener

# installation
    npm install

  optionally
    npm install hiredis

# run service
    HOSTN=go PORT=80 node .

  if you omit `HOSTN`, then relative shortened uris will be generated.

# add uri
    curl -F uri=https://mywaytoolonguri http://go

  this will give you a shortened uri.

# resolve uri

  curl -L http://go/1

# clear database

    redis-cli keys 'go:*' | xargs redis-cli del

  if you have changed `redisPrefix`, then use that instead of `go:`.