You need to learn how to export a transparent PNG correctly. The antialiasing is awful http://i.imgur.com/jA63yv5.png
I would suggest better explaining the birds-eye-view overall architecture of an app built on Nimbus. I don't really understand how any of this is supposed to work.
If it is just a client-side library, what prevents everybody from using it for free forever and independently of you?
Your developer plan says "$ 200". Is that $200/mo? per app?
Why you are not supporting Dropbox anymore?
Hmmm, you want to be able to modify and read my emails, and send emails on my behalf with my google account in order to see a demo application for your framework? I'd love to take a look at what the app can do, but I'm not sure I'm into granting you those permissions.