Fix for Windows Live ID Service Provider

I needed to use Windows Live ID on a project and I soon found out it is pretty broken!

So I hereby provide a fix.
If I need to make changes to this please let me know!

Change logs:
- Changed all 'windowslive' in 'windowslive'
- Changed 'access_token' field to 760 chars to hold the access_token from Live ID
- Changed some typo's