update the README

README.md

@@ -2,11 +2,6 @@
 
 This installer is named after my doggo Onyxia.
 
-## Starting the Installer
-
-```bash
-```
-
 At the core of this installer it does the following:
 
 - Partition the drive of your choice using the `rsfdisk` crate.
@@ -20,3 +15,35 @@ This sets the hashedPassword to my own so you will need to update it to match yo
 ```bash
 mkpasswd -m sha-512
 ```
+
+# Development
+
+## Clone the repository
+
+```bash
+git clone https://gitlab.com/ahoneybun/nyxi-installer.git
+```
+
+## Enter the repository that you just cloned
+
+```bash
+cd nyxi-installer
+```
+
+## Enter nix-shell
+
+This is if you are already running NixOS on your system where development will take place. This will install the needed system packages, set environment variables and such for development.
+
+```bash
+nix-shell
+```
+
+## Building and testing
+
+You can use normal `cargo` commands like:
+
+- `cargo test`
+- `cargo build`
+- `cargo run`
+
+**NOTE:** you will need to build the program and run it with `sudo` currently so `cargo run` is not the best for testing.