hx-confirm attribute

• prompts using window.confirm when hx-confirm is set10ms ‣

  this.server.respondWith('GET', '/test', 'Clicked!')
  confirm.returns(true)
  var btn = make('<button hx-get="/test" hx-confirm="Sure?">Click Me!</button>')
  btn.click()
  confirm.calledOnce.should.equal(true)
  this.server.respond()
  btn.innerHTML.should.equal('Clicked!')