增加参考资料
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
Init Project
Jajor screw up
Update Gemfile for Heroku
Resolove Conflict
Merge branch 'Ch-01'
Merge pull request #9 from diguage/master

Finish Chapter 1
move code base to chapter1
chapter1