add user model specs
add post model spec
add category model spec
add skeleton specs for Account::PostController
add gems for testing
add fixture_replacement
add :user factory
rewrite user model specs
add factory for post and rewrite post model spec
add spec for Account::PostsController
add pry-rails gem
add spec for GET #index/#show/#new
add specs for POST #create
add specs for PUT #update
add specs for DELETE #destroy
add spec for PostsController
add spec for CategoriesController