Add spring files
Change to pg
Add .ruby-version
Change config.
Install simple_form.
Add blog post scaffold.
Organize controller.
Remove initial page.
Add excite id.
Fix form error.
Change bg color.
Install Kaminari gem.
Add style to table.
Add read_post method.
Add read_all method.
Use posted_at instead.
Read posted_at.
Remove post_date.
Install acts-as-taggable-on.
Read tags.
Enable to import posts.