Improve description of features in README
Improve description of features in README

delight-im/ShortURL,delight-im/ShortURL,delight-im/ShortURL,delight-im/ShortURL,delight-im/ShortURL,delight-im/ShortURL,delight-im/ShortURL,delight-im/ShortURL,delight-im/ShortURL,delight-im/ShortURL,delight-im/ShortURL