Function setInstalled

demo/src/demo.js:83–87

(isInstalledNow)

  }

  function setInstalled(isInstalledNow) {
    $installBtn.text('Installed').prop('disabled', true).addClass('disabled');
    let wording = isInstalledNow ? 'successfully' : 'already';
    $hint.text(`You have ${wording} installed GitHub Hovercard, enjoy!`);
  }

  function setInstalling() {
    $installBtn.text('Installing...').prop('disabled', true);