implement index action for posts controller
fix index action of posts controller
implement view for posts#index action
add link to blog welcome/index view
add link to new blog in posts/index view
add link back to all posts in posts/new view
add link back to all posts in posts/show view
add validation of title in posts model
add title validation error handling in posts controller
add error notification to posts/new view
add create action to posts controller
add travis-ci file
add view for posts/edit
fix method name in posts controller
fix posts#new action
implement posts#update action
add Show and Edit links in posts listing
add edit action to posts controller
use hashrockets in posts/edit view
add link to edit post in posts/show view