Merge pull request #5 from jaaaaared/kaiwei/integrate-bootstrap

Add Bootstrap and format Profile Page
Add Comments to user
Merge branch 'master' into kaiwei/add-commentable

Conflicts:
	db/schema.rb
Merge pull request #7 from jaaaaared/kaiwei/add-commentable

Add Comments to user
Merge branch 'master' into kaiwei/integrate-bootstrap

Conflicts:
	db/schema.rb