GMAIL extension using InboxSDK.js (inboxsdk.com)

Bid only if you have done anything similar before. I will need to see some example of your work. Looking for someone to help me with implementing a gmail extension using inboxsdk ([login to view URL]). Basically we need to design a small screen that will allow user to create invoices in the gmail itself. User can save these invoices - that in turn will call our API to store the invoice data. We also need to design a small screen where recent 10 invoices will be listed. If user clicks on any of them then we will display that specific invoice in the gmail itself (using popup of inboxSDK). Remember - we just need a boilerplate and not the end to end coding. So your code , should be able to display invoice create screen, allow user to save (this should call our API with some data - it is is okay if SAVE fails - we want to make sure code calls the API and passed the data) display last 10 invoices, display a single invoice screen. This can be easily done using inbox sdk but without prior knowledge it will be difficult to even understand what we are trying to do here. Thanks.