function optionsOnURL() {
  let params = window.location.search.substring(1);
  let nameValuePairs = params.split('&');
  let options = {};
  nameValuePairs.forEach(function(pair){
    let segments = pair.split('=');
    options[segments[0]] = decodeURIComponent(segments[1]);
  });
  return options;
}
@fileoverview Configure mocha for Traceur testing.in browsers