index.js

var tmi = require('tmi.js')

var options = {
  options: {
    debug: true
  },
  connection: {
    reconnect: true
  },
  identity: {
    username: "CoffeeBotAlpha",
    password: "oauth:929l3ycvb97i729obgy47bicjc0zqe"
  },
  channels: ["#exoti_x"]
};

var client = new tmi.client(options);
client.connect();

client.on('connected', function(address, port) {
  client.action("exoti_x", "Hello i am CoffeeBot i am currently in alpha, i love coffee and i like interacting with people, so welcome to the stream and hello.");
});

client.on('chat', function(channel, user, message, self) {
  if(message === "!twitter") {
    client.action(channel, "twitter.com/blankktweets");
  }
  if(message === "Hey") {
    client.action(channel, "Hi there!");
  }  
});