Update index.html

http://edsilverton.wordpress.com/2011/04/11/avoiding-jqplot-memory-leaks/
finish fixing memory leak using destroy
Merge pull request #17 from yrral86/master

Memory leak fix
Revert jQuery to 1.10.2
Merge pull request #19 from btblog/master

Fix missing jQuery
Merge pull request #1 from hardcpp/master

新版本合并