Added a snippet to create a namespace

As described in the enterprise jQuery article How Good C# Habits can
Encourage Bad Javascript Habits: Part 1
(http://enterprisejquery.com/2010/10/how-good-c-habits-can-encourage-bad-javascript-habits-part-1/)
this snippet creates a namespaced Self-Executing Anonymous Function
which contains both public and private variables/methods.
Merge pull request #4 from brandnameboredom/dev

Added a snippet to create a namespace