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Also started using slices of pointers instead of slices of structs. This
is useful especially in the case of adding to the list of replies of a
comment. If the comment is a plain old struct (non-pointer), the change
wouldn't happen

Signed-off-by: Vartan Benohanian <vartanbeno@gmail.com>

subreddit_test.go

@@ -30,7 +30,7 @@ var expectedSubreddit = &Subreddit{
 var expectedSubreddits = &Subreddits{
 	After:  "t5_2qh0u",
 	Before: "",
-	Subreddits: []Subreddit{
+	Subreddits: []*Subreddit{
 		{
 			ID:      "2qs0k",
 			FullID:  "t5_2qs0k",