:productionにコメント追加

Signed-off-by: hisasann <hisasann25@gmail.com>
index.htmlは不要なので削除

Signed-off-by: hisasann <hisasann25@gmail.com>
User追加

Signed-off-by: hisasann <hisasann25@gmail.com>
Microposts追加

Signed-off-by: hisasann <hisasann25@gmail.com>