code: function load() {
      return new Promise(function (resolve) {
        if (emojis) return resolve(emojis);
  
        return fetch(enpoint).then(function (r) {
          return r.json();
        }).then(function (response) {
          emojis = response;
          resolve(emojis);
        });
      });
    }
docs: Fetch the emoji data from Github's api.
  
  @example
  import { load as loadEmojis } from 'gh-emoji';
  
  loadEmojis().then((emojis) => {
  console.log(emojis['+1']); // 👍
  });
  
  @returns {Promise<Object>} Promise which passes Object with emoji names
  as keys and generated image tags as values to callback.