efa-m: Document -j and trip details mode

=head1 NAME

efa-m - Unofficial interface to the efa.vrr.de departure monitor

efa-m - Unofficial interface to the efa.vrr.de departure and trip monitor

=head1 SYNOPSIS

B<efa-m> [B<-Lr>] [B<-d> I<dd.mm.yyyy>] [B<-t> I<hh:mm>]

[B<-l> I<lines>] [B<-p> I<platforms>] [B<-u> I<url>]

B<efa-m> [B<-jLr>] [B<-d> I<dd.mm.yyyy>] [B<-t> I<hh:mm>]

[B<-l> I<lines>] [B<-p> I<platforms>] [B<-s> I<service>]

[I<city>] [I<type>B<:>]I<name>

B<efa-m> [B<-s> I<service>] I<tripid>

=head1 VERSION

version 3.01

=head1 DESCRIPTION

B<efa-m> lists scheduled tram, bus and train departures at the location I<name>.

B<efa-m> lists scheduled departures at location I<name> or details about the

trip <tripid>.

For each departure, it shows

In departure monitor mode, for each departure, it shows

=over

By default, I<name> refers to a stop, this can be changed by specifying

I<type>.  Supported types are B<address> and B<poi> (point of interest).

In trip details mode, it prints trip information and lists arrival and

departure time, name, and platform of each stop on the trip's route.

=head1 OPTIONS

=over

Probe all known EFA entry points for the specified stop. Print the URLs and

names of all entry points which did not return an error.

=item B<-j>, B<--with-jid>

Show journey IDs for each

=item B<--json>

Print result(s) as JSON and exit. This is a dump of internal data structures