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/immoswp.js

@@ -31,6 +31,7 @@ const config = {
     title: '.js-item-title-link@title | trim',
     link: '.ci-search-result__link@href',
     description: '.js-show-more-item-sm | removeNewline | trim',
+    image: 'img@src',
   },
   normalize: normalize,
   filter: applyBlacklist,