Invoice example tries to find entity before any are created

[bradparks]

hey! I just downloaded these js examples, and tried to run the editable invoice example after inserting my own app id and javascript secret, and got the following error

GET https://api.backendless.com/v1/data/invoice?relationsDepth=1 404 (Not Found)

I think this is because at this point for me (or any other user trying the sample for the first time), the "invoice" doesn't exist as a server side entity yet.

JS-Examples/editable-invoice/backendless/applogic.js

Line 8 in ca42bf7

renderApp(App.store.invoices.find({

Here's a pic of the error

Thanks,

Brad