Fix bug #2

js/app.js

@@ -192,11 +192,11 @@ let app = new Vue({
         },
 
         draw() {
-            this.money += this.bet;
+            this.money = (parseInt(this.money) + parseInt(this.bet));
         },
 
         win() {
-            this.money += this.bet * 2;
+            this.money += (parseInt(this.bet) * 2);
         },
 
         endRound() {