Create new bot for the application (Bot -> Add bot)
Copy bot token to the config.yml
Restart Minecraft Server
Invite it to your server:
Click "OAuth"
Select "bot"
Select bot permissions (at least "Administrator")
Copy URL and go to it
Select server where you want the bot to join and authorize it (If you do not see server in the list, you might not be an owner of that server)
If bot is running at the server and it has correct token, you can write command "!set integratedchannel" on the textchannel which you want integrate with Minecraft chat
Select channel were you want access voting messages to appear. (You should change channel permission to allow only readin channel and its history and disallow everything else)
Create role to the server that has the access to the integrated channel and access requesting channel
Copy role's ID (Enable development mode from the Discord settings and then right click role name) and activate it to the bot by editing config file or using command "!set SERVERNAME role ROLEIDHERE"