chore: prep for npm publish

.npmignore

@@ -0,0 +1,10 @@
+data/*
+!data/entities.json
+
+bin/
+sql/
+.tmp/
+
+*.log
+*.png
+yarn.lock

lib/template.md

@@ -1,11 +1,14 @@
 # Third Party Web
 
+Data on third party entities and their impact on the web.
+
 This document is a summary of which third party scripts are most responsible for excessive JavaScript execution on the web today.
 
 ## Table of Contents
 
 1.  [Goals](#goals)
 1.  [Methodology](#methodology)
+1.  [NPM Module](#npm-module)
 1.  [Updates](#updates)
 1.  [Data](#data)
     1.  [Summary](#summary)
@@ -23,11 +26,28 @@ This document is a summary of which third party scripts are most responsible for
 1.  Identify the third party scripts on the web that have the greatest performance cost.
 1.  Give developers the information they need to make informed decisions about which third parties to include on their sites.
 1.  Incentivize responsible third party script behavior.
+1.  Make this information accessible and useful.
 
 ## Methodology
 
 [HTTP Archive](https://httparchive.org/) is an inititiave that tracks how the web is built. Twice a month, ~4 million sites are crawled with [Lighthouse](https://github.com/GoogleChrome/lighthouse) on mobile. Lighthouse breaks down the total script execution time of each page and attributes the execution to a URL. Using [BigQuery](https://cloud.google.com/bigquery/), this project aggregates the script execution to the origin-level and assigns each origin to the responsible entity.
 
+## NPM Module
+
+The entity classification data is available as an NPM module.
+
+```js
+const {getEntity} = require('third-party-web')
+const entity = getEntity('https://d36mpcpuzc4ztk.cloudfront.net/js/visitor.js')
+console.log(entity)
+//   {
+//     "name": "Freshdesk",
+//     "homepage": "https://freshdesk.com/",
+//     "categories": ["customer-success"],
+//     "domains": ["d36mpcpuzc4ztk.cloudfront.net"]
+//   }
+```
+
 ## Updates
 
 <%= updates_contents %>