add FreeWebNovel (#15)

* add FreeWebNovel

* fix sourceId

* fix chapterName

index.js

@@ -30,6 +30,7 @@ app.use("/api/9/", require("./src/en/noveltrench/NovelTrench"));
 app.use("/api/10/", require("./src/en/vipnovel/VipNovel"));
 app.use("/api/11/", require("./src/en/kisslightnovels/KissLightNovels"));
 app.use("/api/12/", require("./src/en/wuxiaworldsite/WuxiaWorldSite"));
+app.use("/api/13/", require("./src/en/freewebnovel/FreeWebNovel"));
 
 const PORT = process.env.PORT || 5000;