jQuery plugin skeleton

gistfile1.js

(function( $ ){

    var pluginName = 'pluginName';
    var self;

    // list of methods in your plugin
    var methods = {
        init : function( options ) {

            return self.each(function () {
                methods.setSettings(options);
            });
        },

        setSettings: function (options) {
            var settings = self.data('settings');
            if (! settings) {
                self.data('settings', $.extend(methods.getDefaultSettings(), options));
            }
        },

        getSettings: function ($element) {
            return $element.data('settings');
        },

        getDefaultSettings: function () {

            return {
                // your default settings for plugin
            };
        }

    $.fn[pluginName] = function ( method ) {
        self = this;

        if ( methods[method] ) {
            return methods[ method ].apply( this, Array.prototype.slice.call( arguments, 1 ));
        } else if ( typeof method === 'object' || ! method ) {
            return methods.init.apply( this, arguments );
        } else {
            $.error( 'Method ' +  method + ' does not exist in jQuery.pluginName' );
        }
    }

})( jQuery );

Там затерялась '};' перед $.fn[pluginName] - не закрыт объект 'methods'.