updates sdk being called

Facebook suggests using sdk.js instead of all.js
commenting out initial setting of authresponse

causes an error using sdk.js
removes initial setting of authResponse

Is not allowed in sdk.js version of facebook js sdk.
removes test for initial authResponse value

since authResponse is not allowed to be set on init using sdk.js this test isn't valid.
Merge branch 'master' of github.com:kevindeleon/angular-facebook into kevindeleon-master
readd test
Merge branch 'kevindeleon-master'