## Developing ##
developers.facebook.com/docs/authentication/
auth = Fbrails::Auth.new(app_id,app_secret,app_url)
auth.redirect_url # get a redirect page to server-flow authorization
token = auth.token(code) # getting token from code which send back from facebook # => => “TOKEN”, :expires => “TIME_WHEN_EXPIRES”
Fbrails::Auth.token_valid?(token) # return true of false OR Fbrails::Auth.token_valid?(token,expire_time) # return true of false
graph = Fbrails::Graph.new(token)
graph.me # return hash with your info or false