Rename index.html to demo-local.html.
Add html using CDN to demo.
TODO: URLs hoisting by DBCLS is lacked.
Fix a file name to be opend by the 'grunt demo' command.
URLs hoisting by DBCLS is set 'http://bionlp.dbcls.jp/textae/'.
Merge pull request #48 from pubannotation/cdn_demo

Add a html using CDN to demo.