examples/invoice.md in waveapps-0.1.5 vs examples/invoice.md in waveapps-0.1.6

@@ -17,10 +17,10 @@
 Waveapps::Invoice.list_invoices(business_id: <BUSINESS_ID>)
 ```
 
 ## Send invoice
 
-Provide email of recipients in the `to` argument. Note that this must be an array.
+Provide email of recipients in the `to` argument. If you have more than one recipient, pass it as an array.
 
 ```ruby
 Waveapps::Invoice.send_invoice(invoice_id: <INVOICE_ID>, to: [<EMAIL>])
 ```