update README
update README

alexfish/algoliasearch-client-swift,algolia/algoliasearch-client-swift,alexfish/algoliasearch-client-swift,algoliareadmebot/algoliasearch-client-swift,algoliareadmebot/algoliasearch-client-swift,alexfish/algoliasearch-client-swift,algoliareadmebot/algoliasearch-client-swift,algolia/algoliasearch-client-swift