added examples csv

app.py

@@ -11,6 +11,7 @@ APP_TOKEN = os.getenv('APP_TOKEN')
 POS_TOKEN = os.getenv('POS_TOKEN')
 MERCHANT_ID = os.getenv('MERCHANT_ID')
 is_prod = bool(os.getenv('PRODUCTION', False))
+CURRENCY = os.getenv('CURRENCY', 'RUB')
 
 if is_prod:
     API_URI = 'https://pos-api.dinect.com/20130701/'