This programm sends messages between IRC Channels and Discord Chats
Configuration should be pretty straight forward. Just check the Sample configuration.
Rename it to config.json after you are done configuring.
You can read all about the irc_config part here (The Field parts is what u are probably most interested in.)
You will need a Discord Bot Token. You can generate one here
The mapping section contains mappings in both directions.
Use discord2irc to send messages from Discord to IRC and irc2discord to send from IRC to Discord.
You can get the chat ID in discord by going to settings->appearance and selecting the Developer Mode
You can now just rightclick a channel and copy the id.`
Messages which start with any of the characters in the string will be ignored (in both directions). This is nice to prevent sending bot commands around.