Added arn to the main repository

arn/AnimePopularity.go

@@ -0,0 +1,15 @@
+package arn
+
+// AnimePopularity shows how many users have that anime in a certain list.
+type AnimePopularity struct {
+	Watching  int `json:"watching"`
+	Completed int `json:"completed"`
+	Planned   int `json:"planned"`
+	Hold      int `json:"hold"`
+	Dropped   int `json:"dropped"`
+}
+
+// Total returns the total number of users that added this anime to their collection.
+func (p *AnimePopularity) Total() int {
+	return p.Watching + p.Completed + p.Planned + p.Hold + p.Dropped
+}