add nixos-anywhere (#250)

* add nixos-anywhere

* Fix punctuation

* Fix capitalizations

* Fix typo

README.md

@@ -72,6 +72,7 @@
 
 ## Installation Media
 
+* [nixos-anywhere](https://github.com/nix-community/nixos-anywhere) - Install NixOS everywhere via SSH.
 * [nixos-generators](https://github.com/nix-community/nixos-generators) -  Take a NixOS config and build multiple different images types including VirtualBox VMs, Azure images, and installation ISOs.
 * [nixos-infect](https://github.com/elitak/nixos-infect) - Replace a running non-NixOS Linux host with NixOS.
 * [nixos-up](https://github.com/samuela/nixos-up) - Super easy NixOS installer that can be used from the installation ISO.