echo() accepts finalize function for container

allow user control over the output container div by calling finalize
function after every line draw eg:

term.echo("foo", function (x) { x.addClass('output1'); });

then you can do stuff like

$('.output1').toggle()
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Merge pull request #82 from hraban/finalizeecho

echo() accepts finalize function for container
replace empty function with $.noop and update year
Fix ansi colors and option object in echo
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