var getUserRepos = function (user) {
  var apiUrl = 'https://api.github.com/users/' + user + '/repos';

  fetch(apiUrl)
    .then(function (response) {
      if (response.ok) {
        console.log(response);
        response.json().then(function (data) {
          console.log(data);
          //calls display repos function
          displayRepos(data, user);
        });
      } else {
        alert('Error: ' + response.statusText);
      }
    })
    .catch(function (error) {
      alert('Unable to connect to GitHub');
    });
};