Add facebook support

src/services/facebook.js

@@ -0,0 +1,16 @@
+'use strict'
+
+const cheerio = require('cheerio')
+const got = require('got')
+
+module.exports = async username => {
+  const { body } = await got(`https://mobile.facebook.com/${username}`)
+  const $ = cheerio.load(body)
+  return $('meta[property="og:image"]').attr('content')
+}
+
+module.exports.supported = {
+  email: false,
+  username: true,
+  domain: false
+}

src/services/index.js

@@ -3,10 +3,11 @@
 const { reduce } = require('lodash')
 
 const services = {
-  instagram: require('./instagram'),
   twitter: require('./twitter'),
+  instagram: require('./instagram'),
   domain: require('./domain'),
   github: require('./github'),
+  facebook: require('./facebook'),
   // the services that return defaulta avatar, go after!
   gravatar: require('./gravatar')
 }

static/index.html

@@ -57,6 +57,9 @@ <h2>Specifying the service</h2>
         <h3>GitHub</h3>
         <p><code>&lt;img src="https://unavatar.now.sh/github/:username" /&gt;</code></p>
         <p>i.e <a target="_blank" href="https://unavatar.now.sh/github/mdo">https://unavatar.now.sh/github/mdo</a></p>
+        <h3>Facebook</h3>
+        <p><code>&lt;img src="https://unavatar.now.sh/facebook/:username" /&gt;</code></p>
+        <p>i.e <a target="_blank" href="https://unavatar.now.sh/facebook/zuck">https://unavatar.now.sh/facebook/zuck</a></p>
         <h3>Gravatar</h3>
         <p><code>&lt;img src="https://unavatar.now.sh/gravatar/:email" /&gt;</code></p>
         <p>i.e <a target="_blank" href="https://unavatar.now.sh/gravatar/sindresorhus@gmail.com">https://unavatar.now.sh/gravatar/sindresorhus@gmail.com</a></p>