Update to Chrome Extension OAuth2 Library by Juan Ramirez (whoisjuan)

[whoisjuan]

This is an update to this awesome and so much needed library.

I struggled a lot to find a reasonable solution for OAuth flows from Chrome Extensions and this was the only good solution I found. Everything else out there is cumbersome and hard to use.

I did four main changes:

1. I changed the storage from LocalStorage to the Chrome.Storage API.
2. I updated a Regex that did an extraction from the authorization response. I replaced it with a JSON parsing.
3. I updated all the documentation with extra explanations on how to setup the library, how to initialize the library and high-level overview of the library.
4. I took the liberty of doing some branding to the library. It would make it more appealing to other developers. I hope that's ok.

Thanks for creating this little awesome library! I would try to add more contributions!

Cheers,
Juan