Throw a specific error if IDP not found

Throw a specific error if IDP not found

update version for new release

Update README.md

Merge pull request aacotroneo#187 from darynmitchell/merge-multi-idp-…

…back-into-aactroneo

Merge multi-idp fork (nirajp) into laravel-saml2

Merge pull request aacotroneo#187 from darynmitchell/merge-multi-idp-…

…back-into-aactroneo

Merge multi-idp fork (nirajp) into laravel-saml2

Merge pull request aacotroneo#166 from aacotroneo/one-login-3

One login 3

Update composer.json

Merge pull request aacotroneo#106 from RobertBoes/master

Bump version

update version for a new release