validations of M
Update README.markdown
User modle
Finish static pages
add contact page and test
Make User model
fix chapter
add chapter 3
Merge pull request #34 from idanyzheng/master

daily PR
init demo-app
add micorpost
Finish demo app
initial commit for sample_app
Add a full title helper
Merge pull request #37 from chankaward/master

finish chapter 4
Merge pull request #35 from kaku87/master

第三章也搞定了
Merge pull request #36 from xiongbo/master

第一、二章
Merge branch 'master' of https://github.com/bay6/prepare