add 'new' action to posts_controller
add pry and pry-rails to Gemfile
add create action and post_params to posts_controller
add show and edit actions to posts_controller
add link to details, edit, and remove posts
add edit and show .html.erb
add edit.html.erb
add update action to posts_controller
add destroy action to posts_controller
add autofocus and placeholders to text_field(s) in posts/new.html.erb
add route to direct root of site to posts#index
add validation to check presence of title and url
add error messages to display if record not saved
add initalize votes to 0 before creating the record
add '?' to 'Are you sure'
edit upvote / downvote placeholder to work
add vote action. add :votes to permit in post_params