Add possibility to use rps_nickserv's api with a Pid.

Return pid if no nickserv can't find nickname.

Linebreak.

Now lobby waits for other players to join or starts without them. Before it waited for a fixed number of players.

Use ~p instead of ~w for win stats, overall more human-friendly format in printer.

Get win stats by nicknames, not pids.

rps5 as a gen_server.

Add only unique hands to #ruleinfo.hands.

Keeping comments up-to-date with code.

EUnit's assertEqual takes Expect first.