README: add Gift and RC6 to the algorithms table (#522)

Author: sorairolake

README.md

@@ -44,11 +44,13 @@ It's generally recommended not to use other cipher implementations in this repos
 | [CAST5] (CAST-128) | [`cast5`] | [![crates.io](https://img.shields.io/crates/v/cast5.svg)](https://crates.io/crates/cast5) | [![Documentation](https://docs.rs/cast5/badge.svg)](https://docs.rs/cast5) | ![MSRV 1.85][msrv-1.85] |
 | [CAST6] (CAST-256) | [`cast6`] | [![crates.io](https://img.shields.io/crates/v/cast6.svg)](https://crates.io/crates/cast6) | [![Documentation](https://docs.rs/cast6/badge.svg)](https://docs.rs/cast6) | ![MSRV 1.85][msrv-1.85] |
 | [DES] + [3DES] (DEA, 3DEA) | [`des`] | [![crates.io](https://img.shields.io/crates/v/des.svg)](https://crates.io/crates/des) | [![Documentation](https://docs.rs/des/badge.svg)](https://docs.rs/des) | ![MSRV 1.85][msrv-1.85] |
+| [Gift] | [`gift-cipher`] | [![crates.io](https://img.shields.io/crates/v/gift-cipher.svg)](https://crates.io/crates/gift-cipher) | [![Documentation](https://docs.rs/gift-cipher/badge.svg)](https://docs.rs/gift-cipher) | ![MSRV 1.85][msrv-1.85] |
 | [IDEA] | [`idea`] | [![crates.io](https://img.shields.io/crates/v/idea.svg)](https://crates.io/crates/idea) | [![Documentation](https://docs.rs/idea/badge.svg)](https://docs.rs/idea) | ![MSRV 1.85][msrv-1.85] |
 | [Kuznyechik] (GOST R 34.12-2015)  | [`kuznyechik`] | [![crates.io](https://img.shields.io/crates/v/kuznyechik.svg)](https://crates.io/crates/kuznyechik) | [![Documentation](https://docs.rs/kuznyechik/badge.svg)](https://docs.rs/kuznyechik) | ![MSRV 1.85][msrv-1.85] |
 | [Magma] (GOST R 34.12-2015) | [`magma`] | [![crates.io](https://img.shields.io/crates/v/magma.svg)](https://crates.io/crates/magma) | [![Documentation](https://docs.rs/magma/badge.svg)](https://docs.rs/magma) | ![MSRV 1.85][msrv-1.85] |
 | [RC2] (ARC2) | [`rc2`] | [![crates.io](https://img.shields.io/crates/v/rc2.svg)](https://crates.io/crates/rc2) | [![Documentation](https://docs.rs/rc2/badge.svg)](https://docs.rs/rc2) | ![MSRV 1.85][msrv-1.85] |
 | [RC5] | [`rc5`] | [![crates.io](https://img.shields.io/crates/v/rc5.svg)](https://crates.io/crates/rc5) | [![Documentation](https://docs.rs/rc5/badge.svg)](https://docs.rs/rc5) | ![MSRV 1.85][msrv-1.85] |
+| [RC6] | [`rc6`] | [![crates.io](https://img.shields.io/crates/v/rc6.svg)](https://crates.io/crates/rc6) | [![Documentation](https://docs.rs/rc6/badge.svg)](https://docs.rs/rc6) | ![MSRV 1.85][msrv-1.85] |
 | [Serpent] | [`serpent`] | [![crates.io](https://img.shields.io/crates/v/serpent.svg)](https://crates.io/crates/serpent) | [![Documentation](https://docs.rs/serpent/badge.svg)](https://docs.rs/serpent) | ![MSRV 1.85][msrv-1.85] |
 | [SM4] | [`sm4`] | [![crates.io](https://img.shields.io/crates/v/sm4.svg)](https://crates.io/crates/sm4) | [![Documentation](https://docs.rs/sm4/badge.svg)](https://docs.rs/sm4) | ![MSRV 1.85][msrv-1.85] |
 | [Speck] | [`speck-cipher`] | [![crates.io](https://img.shields.io/crates/v/speck-cipher.svg)](https://crates.io/crates/speck-cipher) | [![Documentation](https://docs.rs/speck-cipher/badge.svg)](https://docs.rs/speck-cipher) | ![MSRV 1.85][msrv-1.85] |
@@ -92,11 +94,13 @@ dual licensed as above, without any additional terms or conditions.
 [`cast5`]: ./cast5
 [`cast6`]: ./cast6
 [`des`]: ./des
+[`gift-cipher`]: ./gift
 [`idea`]: ./idea
 [`kuznyechik`]: ./kuznyechik
 [`magma`]: ./magma
 [`rc2`]: ./rc2
 [`rc5`]: ./rc5
+[`rc6`]: ./rc6
 [`serpent`]: ./serpent
 [`sm4`]: ./sm4
 [`speck-cipher`]: ./speck
@@ -119,11 +123,13 @@ dual licensed as above, without any additional terms or conditions.
 [CAST6]: https://en.wikipedia.org/wiki/CAST-256
 [DES]: https://en.wikipedia.org/wiki/Data_Encryption_Standard
 [3DES]: https://en.wikipedia.org/wiki/Triple_DES
+[Gift]: https://eprint.iacr.org/2017/622.pdf
 [IDEA]: https://simple.wikipedia.org/wiki/International_Data_Encryption_Algorithm
 [Kuznyechik]: https://en.wikipedia.org/wiki/Kuznyechik
 [Magma]: https://en.wikipedia.org/wiki/GOST_(block_cipher)
 [RC2]: https://en.wikipedia.org/wiki/RC2
 [RC5]: https://en.wikipedia.org/wiki/RC5
+[RC6]: https://en.wikipedia.org/wiki/RC6
 [Serpent]: https://en.wikipedia.org/wiki/Serpent_(cipher)
 [SM4]: https://en.wikipedia.org/wiki/SM4_(cipher)
 [Speck]: https://en.wikipedia.org/wiki/Speck_(cipher)