Add auth variables to env example

.env.example

@@ -12,4 +12,6 @@ DATABASE_URL=postgresql+psycopg://trade:trade@postgres:5432/trade
 REDIS_URL=redis://redis:6379/0
 COINEX_ACCESS_ID=
 COINEX_SECRET_KEY=
-LIVE_REQUIRES_ACK_TEXT=I_UNDERSTAND_LIVE_TRADING_RISK
+AUTH_ENABLED=true
+ADMIN_USERNAME=admin
+ADMIN_PASSWORD=admin