OmniAuth2 tested version

Fixed the Implicit Flow.

Changes:

• options.issuer is required.
• client_options.{scheme, host, port} are changed optional.

Known issues:

• post_logout_redirect_uri does not work yet.

Last OmniAuth 1.9

Merge m0n9oose branch.
This is the final version for OmniAuth 1.9.

Azure AD automatically supported

Improve for Azure AD

• automatically set client_auth_method option when discovery:true
• remove option send_client_secret_to_token_endpoint

Renewal version released

It has been brushed up overall.

Work in progress:

• The Implicit Flow mode.

A new integrated version out -- v0.7.7

• Ruby 2.2+
• omniauth 1.6+
• openid_connect 1.1+

many updated.