Create Wave Income/Expense from Loyverse receipts

This template periodically checks for new receipts in Loyverse and uses the retrieved information to check the receipt type. If the type is "Sales" it will create an income in Wave. If the type is "Refund" it will create an expense in Wave. It will also add a new row to a Google Sheet. This example uses [this sheet](https://docs.google.com/spreadsheets/d/1HKxZNi0mUpEF3tR9_dUXMNKQRlnrN6PVl-ldmg0MvLo/edit#gid=0). The template is scheduled to run every 15 minutes. You can change the schedule after you set up the template.