Usage : shout

Shout is a way of giving a message to all players on the mud.  When you shout
a message, all players are given the message in the following format.
If your name is Shadow and you type 'shout How do I use pf's soul?', all
players would receive the message

Shadow shouts: How do I use pf's soul?

Examples:

Pinkfish shouts: what is your problem?  It is easy to use!

Furball shouts: Give up now.  Pinkfish is the only one who knows how!

Ember shouts: I agree with furball (for once ;)
