adding modularity

README.md

@@ -1,2 +1,19 @@
 # NixOS configuration - managing my devices
- 
+
+
+## Using this flake
+Clone this repository and use the current directory as the flake target `<target>`.
+
+or
+
+Use this repository as a a remote input using the following format for `<target>`:
+```
+git+https://git.kluster.moll.re/remoll/nixos-config
+```
+Don't forget to add the `#<host>` to the end of the target to specify the host configuration to use.
+
+
+## Hosts
+
+### Spectre
+Run `nixos-rebuild switch --flake <target>#spectre` to apply the configuration.