code: function fetchRepo(fullName) {
    return {
      [CALL_API]: {
        types: [REPO_REQUEST, REPO_SUCCESS, REPO_FAILURE],
        endpoint: `repos/${fullName}`,
        schema: Schemas.REPO
      }
    };
  }
docs: Fetches a single repository from Github API.
  Relies on the custom API middleware defined in ../middleware/api.js.