Example does not work... what is twttr?

[LAMike310]

Describe the bug
Example code in the README doesn't work

To Reproduce
Steps to reproduce the behavior:

1. npm install twitter-text, import twitter from 'twitter-text', twttr.txt.parseTweet(tweet);, run the script
2. ReferenceError: twttr is not defined

Expected behavior
Example code should work to parse tweet

The fix for this is to write:

var twitter = require('twitter-text');
var tweet = "This is a test tweet";
console.log(twitter.parseTweet(tweet));