Finish demo_app in chapter2
Initial commit
finish chapter 2
Merge pull request #2 from chankaward/master

Finish Chapter 2
先收了，后检查
Update README.markdown

cool
rename project folder
Update README.markdown
Update README.markdown
Update README.markdown
Jajor screw up
Update Gemfile for Heroku
Resolove Conflict
Merge branch 'Ch-01'