Merge pull request cloudbees-oss#36 from johnou/organizations

Fix typo.

Author: stephenc

src/main/java/org/zendesk/client/v2/Zendesk.java

@@ -440,7 +440,7 @@ public Iterable<User> getGroupUsers(long id) {
     }
 
     public Iterable<User> getOrganizationUsers(long id) {
-        return new PagedIterable<User>(tmpl("/organization/{id}/users.json").set("id", id),
+        return new PagedIterable<User>(tmpl("/organizations/{id}/users.json").set("id", id),
                 handleList(User.class, "users"));
     }