function createWechat ($container, $data) {
            var $wechat = $container.find('a.icon-wechat');

            if (!$wechat.length) {return;}

            $wechat.append('<div class="wechat-qrcode"><h4>'+$data.wechatQrcodeTitle+'</h4><div class="qrcode"></div><div class="help">'+$data.wechatQrcodeHelper+'</div></div>');

            $wechat.find('.qrcode').qrcode({render: 'image', size: $data.wechatQrcodeSize, text: $data.url});

            if ($wechat.offset().top < 100) {
                $wechat.find('.wechat-qrcode').addClass('bottom');
            }
        }
Create the wechat icon and QRCode.

@param {Object|String} $container
@param {Object}        $data