New rails app
generated person controller
created 'show' action on 'person controller' and routed to root
added form fields to person#show 'view'
added 'person' class to PersonController' with comments showing test session variables
added a new action to PersonController to accept POST
requests from 'show' controller.
successfully took control of FORM parameters
and rendered raw values (no processing yet)
stored 'person' object in 'session' and created 'person#display' route
to show stored variables