Cryptography: Add libhydrogen,remove libmcrypt,update licenses

Author: myd7349

README.md

@@ -213,14 +213,14 @@ A curated list of awesome C/C++ frameworks, libraries, resources, and shiny thin
 ## Cryptography
 *Cryptography and Encryption Libraries*
 
-* [Bcrypt](http://bcrypt.sourceforge.net/) - A cross platform file encryption utility. Encrypted files are portable across all supported operating systems and processors.
+* [Bcrypt](http://bcrypt.sourceforge.net/) - A cross platform file encryption utility. Encrypted files are portable across all supported operating systems and processors. [BSD]
 * [BeeCrypt](http://beecrypt.sourceforge.net/)
 * [Botan](http://botan.randombit.net/) - A crypto library for C++. [BSD-2]
-* [Crypto++](http://www.cryptopp.com/) - A free C++ class library of cryptographic schemes. [Boost]
+* [Crypto++](https://github.com/weidai11/cryptopp) - A free C++ class library of cryptographic schemes. [Boost] [website](http://www.cryptopp.com/)
 * [GnuPG](https://www.gnupg.org/) - A complete and free implementation of the OpenPGP standard. [GPL]
 * [GnuTLS](http://www.gnutls.org/) - A secure communications library implementing the SSL, TLS and DTLS protocols. [LGPL2.1]
-* [Libgcrypt](http://www.gnu.org/software/libgcrypt/)
-* [libmcrypt]()
+* [Libgcrypt](http://www.gnu.org/software/libgcrypt/) - A general purpose cryptographic library originally based on code from GnuPG. [LGPLv2.1+]
+* [libhydrogen](https://github.com/jedisct1/libhydrogen) - A lightweight, secure, easy-to-use crypto library for constrained environments. [ISC]
 * [LibreSSL](http://www.libressl.org/) - A free version of the SSL/TLS protocol forked from OpenSSL in 2014. [?]
 * [libsodium](https://github.com/jedisct1/libsodium) - P(ortable|ackageable) NaCl-based crypto library, opinionated and easy to use. [ISC]
 * [LibTomCrypt](https://github.com/libtom/libtomcrypt) - A fairly comprehensive, modular and portable cryptographic toolkit. [WTFPL]