PoCPoC to prove cookie based authentication

used by the client for the domain .example.com

This domain level cookie is important to consider
because only apps running under this domain will have
access to this cookie. Otherwise the client applications
will need to either:
1) handle login in a session variable
2) call auth provider for every request to a restricted resource
rename .rvmrc to .ruby-version
append gemset to .ruby-version

to make it work with pow a little easier
logging and debugging added

to help understand cookie v. session auth management
use accounts application for login not membership
Use omniauth-nucats-accounts gem

in conjunction with omniauth_configure
add cfar sponsor

and rake task for admins
check cookie exists and is valid
Merge branch 'feature/sso_cookie_test' into develop