efa(1): Update NAME and DESCRIPTION

=head1 NAME

efa - unofficial efa.vrr.de command line client

efa - Command line client for EFA-based public transit routing services

=head1 SYNOPSIS

=head1 DESCRIPTION

B<efa> is a command line client for the L<http://efa.vrr.de> web interface.

It sends the specified information to the online form and displays the results.

B<efa> is a command line client for EFA-based public transit routing

interfaces, e.g. L<http://efa.vrr.de>.  B<efa> requests connections between two

points and displays the results.

It also supports other EFA services than L<http://efa.vrr.de>.  B<efa> has a

builtin list of EFA entry points which can be probed with the B<-A> and B<-D>

options and listed with B<-l>. You can also specify a custom service using

B<-u> I<url> or B<-s> I<name>.

However, the default EFA service is sufficient in most cases (even ICE

connections all over Germany).

By default, the EFA service at L<http://efa.vrr.de> (operated by

Verkehrsverbund Rhein-Ruhr) is used, which supports most places in Germany.

A list of all supported EFA instances can be retrieved with B<-l> and a custom

instance can be selected using B<-s> I<service> or B<-u> I<url>. It is also

possible to probe all known EFA services for a specific connection using the

B<-A> and B<-D> options.

=head1 OPTIONS