解决向上移动最后一页时出现标题丢失的bug

具体原因应该是vm.js里currendSid监听了pageList,page.js里moveUpPage时会splice pageList，导致pageList的length会临时-1，而这时currentPage还是原length，所以会读出undefined
Merge pull request #8 from elementstorm/master

解决向上移动最后一页时出现标题丢失的bug
supported load data from gist with a certain data format

index.html?gist=Jinjiang_b790104b5e101c1924bd_9db9681fca44452771b980dd3af662713f0a39a6
Merge remote-tracking branch 'origin/develop'
解决向上移动最后一页时出现标题丢失的bug

具体原因应该是vm.js里currendSid监听了pageList,page.js里moveUpPage时会splice pageList，导致pageList的length会临时-1，而这时currentPage还是原length，所以会读出undefined
fixed bug: import data from gist
Merge remote-tracking branch 'origin/develop'
added js extension interface

?ext=<encoded js file url>
Merge branch 'develop'
added code highlight
Merge branch 'develop'
长文本强制折行
added: preview from current page
support appcache

fixed new bootstrap url
Merge branch 'develop'