Sublime Text 2 JavaScript self-executing function expression snippet

funcx.sublime-snippet

<snippet>
    <content><![CDATA[(function() {
    ${0:$TM_SELECTED_TEXT}
})();]]></content>
    <tabTrigger>funcx</tabTrigger>
    <scope>source.js</scope>
    <description>Self-executing function expression</description>
</snippet>

All you have to do is to download that file and save it in ~/.config/sublime-text-2/Packages/User/JavaScript

Next time you type funx and hit Tab it will result in a function expression optionally wrapping previously selected text.