I see you use the (function() {…})(); syntax in your gist, while the linked article uses (function() {…}()); I tried some simple experiment, even passing a param in the outer parens, and both seemed to work the same, and ok. Is one of these "right" and the other one "wrong"?
This is purely a matter of taste. You only need the parens to tell JavaScript that it is a function expression and not a function declaration (a statement). The outer parens make an IIFE look even more block-like to me, which is why I use it. Any other prefix that tells JS that the IIFE is an expression is OK, too. For example:
+function() { console.log("bla") }();
But: this one converts the result to a number, which you don’t want if you need the result of the IIFE. On the other hand, in places where you need that, there is usually no ambiguity with statements, anyway, and you don’t need any kind of prefix.
