Handle URLs that io.js can't handle

lib/worm-scraper.js

@@ -61,7 +61,10 @@ function downloadAllChapters() {
 
     console.log(`Downloading ${currentChapter}`);
 
-    return request(currentChapter).redirects(10).then(function (response) {
+    // Necessary for https://parahumans.wordpress.com/2011/10/11/interlude-3½-bonus/
+    const escapedUrl = encodeURI(currentChapter);
+
+    return request(escapedUrl).redirects(10).then(function (response) {
       return response.text();
     })
     .then(function (contents) {