Sua tu ngu thiet ke huong test
Merge branch 'master' of github.com:ktmt/ktmtblog-octopress
Fix typo in thiet ke huong test
Merge branch 'master' of github.com:ktmt/ktmtblog-octopress
Merge branch 'master' of github.com:ktmt/ktmtblog-octopress
Add 64 bit unique ID