Recently I was looking for a service that could provide a user authentication based on social networks. I ended on oneall.com
After having a look at the documentation I decided to build a polymer element for this service.
A month ago, I released v1.0 but this version did not include premium methods. Here comes v1.1 that now supports all the methods provided by OneAll.
Feel free to participate to this repo.
To give you a preview, this is what you need to display this service on your website:
You can find more examples in the demo
folder on github.