update to 1.1

git-svn-id: https://plugins.svn.wordpress.org/gold-price-chart-widget/trunk@957543 b8457f37-d9ea-0310-8a92-e5e31aec5664
update readme.txt

git-svn-id: https://plugins.svn.wordpress.org/gold-price-chart-widget/trunk@957548 b8457f37-d9ea-0310-8a92-e5e31aec5664