Gems and fixes for rails4

Up to the point I was prompted to fix "attr_accessible" issues
Explicitly require foreman and switch to thin
Gemfile.lock
now using rbenv instead
Set rails to 4.0.4

get rid of thin
fix routing error (still not working)
Update README.mkd
devise mailer config

not used yet
unicorn, devise, and gem file updates

These were necessary to get sign in working in local env
update readme
merge
remove .rvmrc from git ignore