client.on('message', message => {
    if(message.content.startsWith(!avatar)) {
       const mentionmember = message.mentions.members.first() || message.guild.members.get(args[0]);
        const embed = new RichEmbed()
        embed.setColor(525252)
        embed.setTimestamp()
        if (!mentionmember) {
            embed.setTitle(`**${message.author.username}** avatar`)
            embed.setImage(message.author.avatarURL)
        } else if (mentionmember) {
            embed.setTitle(`**${mentionmember.username}** avatar`)
            embed.setImage(mentionmember.user.avatarURL)

        }
        message.channel.send(embed)
}
})