within "message" arrow function
    // fun little coin game 
  if (!coins[message.author.id]){
    coins[message.author.id] = {
      coins: 0
    };
  }
  let coinAmt = Math.floor(Math.random() * 15) + 1;
  let baseAmt = Math.floor(Math.random() * 15) + 1;
  // console.log(`${coinAmt} ; ${baseAmt}`);
  if(coinAmt === baseAmt){
    coins[message.author.id] = {
      coins: coins[message.author.id].coins + coinAmt
    };
    // keep track of coins here
    fs.writeFile("./coins.json", JSON.stringify(coins), (err) => {
      if (err) console.log(err)
    });
    // coins embed
    let coinEmbed = new Discord.RichEmbed()
      .setAuthor(message.author.username)
      .setColor("#0000FF")
      .addField("💸", `${coinAmt} coins added!`);
    //flash current coins
    // message.channel.send(coinEmbed).then(msg => {msg.delete(5000)});
  }