Add command to delete/init a Ladder instance
user
```ruby
# require defined gems
Bundler.require(:default)

class Ladder < Thor

  desc "destroy URL", "Delete and (re)initialize a Ladder instance"
  def destroy(url)
    puts RestClient.delete compose_url(url)
  end

  private

  # ensure that a string matches proper HTTP/HTTPS syntax
  def validate_url(string)
    schemes = ['http', 'https']
    match = string.match(URI.regexp(schemes))
    return (0 == match.begin(0) and string.size == match.end(0)) if match
    false
  end

  # format a URL for POSTing
  def compose_url(url)
    abort "Invalid URL: #{url}" unless validate_url(url)

    query = {}

    uri = URI(url)
    uri.path = '/'
    uri.to_s
  end

end```
assistant