Move Dovecot Config From 1.x To 2.x

I have a very basic "working" Dovecot configuration from 1.x as shown below:

Code:

auth_mechanisms = plain login
mail_location = maildir:~/mail
passdb {
  driver = pam
}
protocols = imap
service auth {
  unix_listener auth-client {
    group = postfix
    mode = 0660
    user = postfix
  }
  user = root
}
ssl_cert = </some/dir/cert.pem
ssl_key = </some/dir/key.pem
userdb {
  driver = passwd
}
#protocol imap {
#  imap_client_workarounds = delay-newmail tb-extra-mailbox-sep
#}

My question is I've built a new server and now it has Dovecot 2.0.11 & I would like to know if I need to generate a new configuration file or will the above 1.x work in 2.0.11? The configuration file 'dovecot.conf' generated by 2.0.11 is all commented out and I don't know what I need to uncomment / add to the config to get IMAP working.

Code:

[root@mail /]# doveconf -n | head -2
# 2.0.11: /etc/dovecot/dovecot.conf