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/
Update pods.
Merge branch 'patch-1' of https://github.com/jerson/SimpleAuth into patch
Cleanup and simplify logic.