Adding images to scraping data (#157)

* Fredy now supports pulling the main Image from the listing and send it together with the usual information

lib/provider/immobilienDe.js

@@ -1,26 +1,34 @@
 import utils, { buildHash } from '../utils.js';
+
 let appliedBlackList = [];
+
 function shortenLink(link) {
   return link.substring(0, link.indexOf('?'));
 }
+
 function parseId(shortenedLink) {
   return shortenedLink.substring(shortenedLink.lastIndexOf('/') + 1);
 }
+
 function normalize(o) {
+  const baseUrl = 'https://www.immobilien.de';
   const size = o.size || 'N/A m²';
   const price = o.price || 'N/A €';
   const title = o.title || 'No title available';
   const address = o.address || 'No address available';
   const shortLink = shortenLink(o.link);
-  const link = `https://www.immobilien.de/${shortLink}`;
+  const link = `${baseUrl}/${shortLink}`;
+  const image = baseUrl + o.image;
   const id = buildHash(parseId(shortLink), o.price);
-  return Object.assign(o, { id, price, size, title, address, link });
+  return Object.assign(o, { id, price, size, title, address, link, image });
 }
+
 function applyBlacklist(o) {
   const titleNotBlacklisted = !utils.isOneOf(o.title, appliedBlackList);
   const descNotBlacklisted = !utils.isOneOf(o.description, appliedBlackList);
   return titleNotBlacklisted && descNotBlacklisted;
 }
+
 const config = {
   url: null,
   crawlContainer: '._ref',
@@ -34,6 +42,7 @@ const config = {
     description: '.list_entry .description | trim',
     link: '@href',
     address: '.list_entry .place',
+    image: '.list_entry img@src',
   },
   normalize: normalize,
   filter: applyBlacklist,