Only download these if you are interested in hosting yourself. Otherwise, you can just use the public instance at http://jitstreamer.com/
You will need some sort of usbmuxd client. For Linux, use usbmuxd. For Windows, download iTunes from Apple's website. For Mac, it is built in.
You will need to create a config.json that looks something like
"port": 80,
"host": "0.0.0.0",
"static_path": "../JitStreamerSite/dist",
"database_path": "./database.json",
"plist_storage": "/var/lib/lockdown",
"dmg_path": "/dmg",
"altserver_path": "",
"allowed_ips": [
"69.69"
]
}