optional information

I tried login with test accounts and sometimes users can not have certain fields like username, email or verified

not having these fields cause an error in the application
Update SimpleAuthFaceBookWebProvider.m

From Facebook: On the web, basic_info is implied with every request and isn't required, although the best practice is to include it. Passing basic_info is required on iOS and Android with every permission request.

A person's public profile refers to the following properties on the user object by default:

id
name
first_name
last_name
link
username
gender
locale
age_range
Other public information

 https://developers.facebook.com/docs/facebook-login/permissions/
Cleanup and simplify logic.
Added Feedly web configuration

	* Created web view controller based on simpleauth base
	* Added demo
Clean up feedly provider implementation. #49
Start work on building omniauth style response. #49