Update HighchartsWidget.php

The 'lang' Option can only be set before the instantion of the object. see: http://api.highcharts.com/highcharts#lang

this change enables you to set the lang property for example with:
$this->Widget('ext.highcharts.HighchartsWidget', array(
'setupOptions'=> array(
		'lang' => array(
			'decimalPoint' => ',',
			'thousandsSep' => '.',
			'loading' => 'Lade...',
			'months' => Yii::app()->locale->getMonthNames('wide'),
            'weekdays' => Yii::app()->locale->getWeekDayNames('wide'),
            'shortMonths' => Yii::app()->locale->getMonthNames('abbreviated')
		)
	),
);
reference multiple charts on one page

with this change it's possible to reference one chart between multiple charts on one page
Merge pull request #2 from stahlgmbh/patch-1

Update HighchartsWidget.php
Merge branch 'master' of git://github.com/stahlgmbh/yii-highcharts into stahlgmbh-master

Conflicts:
	highcharts/HighchartsWidget.php
Merge pull request #5 from acorncom/add-composer

Added Composer.json file
Upgraded Highcharts core library to v3.0.9
Merge pull request #6 from acorncom/active-highstock-widget

Added in an ActiveHighStock widget
Upgraded documentation to reflect current version
Fixed file dependencies to work with any install path
Merge branch 'master' of git://github.com/miloschuman/yii-highcharts