Integration with express

[buster95]

How can I integrate it with a existent express app??

[buster95]

let me make you a PR, adding a middleware() function that will be used in a existent express instance
I'm doing tests

could be used such as in the next code

var app = require('express')();

// bot.start(); this method will not used if you have a existent express instance
app.use(bot.middleware());