Proposal: fluent API

[zabulus]

Hi there. Good library, looks pretty awesome!
But I have a proposal for API.
From samples:

	win.Add (
	    // The ones with my favorite layout system
  	    login, password, loginText, passText,

It's quite hard to gather all controls, that I've spawned before to add to win through Add method (I've created around 5 or 6 label-text pairs, and it's already cumbersome to register them all in win).
Proposal is following:

loginLabel = win.Label("Login")
   .Position(3, 2);
passwordLabel = win.Label("Password")
   .Position(Pos.Left(loginLabel), Pos.Top(loginLabel) + 1);

This will allow to combine adding to win and initialization of objects. I'll create my own extension methods, as I see there is nothing complicated and that could be done from consumer side.

[migueldeicaza]

This is generally a good idea, but I would like to see a comprehensive proposal to what this does.

Generally, .NET guidelines do not use fluent APIs, and I would like to learn more about what the good practices are for this.

Feel free to reopen when we have a more comprehensive design.