created Micropost model
Merge branch 'master' of https://github.com/bay6/prepare into user-microposts
Merge branch 'master' of https://github.com/bay6/prepare

:q
add contact page & DRY
Merge branch 'master' of https://github.com/bay6/prepare

:q
add contact page & DRY
Merge branch 'Static_Pages'

:q
finish chapter3
finish chapter3
add session controller and test
add signin view
chapter4 excercise
add sign-in and sign-out function
Finish sign in
Merge pull request #58 from xiongbo/master

Finished Chapter 8
Added user microposts
Finished chapter10
add edit user
add authentication with signin and edit
add better redirect