clarify logs and gitignore and skipping vendor from now on

Former-commit-id: c8b61b58379d768f04e1593c2a77cf429407cf62

rss/feed.go

@@ -74,20 +74,20 @@ func (f *Feed) Pull() error {
 	for _, i := range gofeed.Items {
 		item, err := newItem(i, f.ContentFilter)
 		if err != nil {
-			log.Println(err)
+			log.Println("[Pull]", err)
 			continue
 		}
 		itemTSs = append(itemTSs, &item.TS)
 		if item.TS.Before(f.Updated) {
-			log.Println("Skipping old item")
+			log.Println("[Pull]", "Skipping old item")
 			continue
 		}
 		if ok := regexp.MustCompile(f.TitleFilter).MatchString(item.Title); !ok {
-			log.Println("Skipping bad titled item")
+			log.Println("[Pull]", "Skipping bad titled item")
 			continue
 		}
 		if err := item.save(f.Key); err != nil {
-			log.Println(err)
+			log.Println("[Pull]", err)
 			continue
 		}
 	}

rss/rss.go

@@ -24,7 +24,7 @@ func (rss *RSS) Run() error {
 			return nil
 		case i := <-rss.items:
 			if err := rss.update(i); err != nil {
-				log.Println(err)
+				log.Println("[rss.Run]", err)
 			}
 		}
 	}