Added Windows installation instructions

Author: RAR27

README.md

@@ -27,6 +27,7 @@ To update after installation, run:\
 `cargo install dyn-wall-rs --force`
 
 ### Manual
+#### Unix
   1. Download the latest binary from the [releases](RELEASES) page
   2. (**Optional**) To ensure the file you downloaded is correct and was not tampered with, do the following:
       1. Download the respective .sha256 file
@@ -36,6 +37,15 @@ To update after installation, run:\
 `tar -zxvf dyn-wall-rs.tar.gz`
   4. You can now run it by running `./dyn-wall-rs` in the directory the binary was unpacked. It is recommended to place the binary in your $PATH, so you can use it from anywhere
 
+#### Windows
+  1. Download the latest binary from the [releases](RELEASES) page
+  2. (**Optional**) To ensure the file you downloaded is correct and was not tampered with, do the following:
+      1. Download the respective `.sha256` file
+      2. Use a hash checking tool to obtain the sha256sum of the `.zip` file
+      3. Compare the sha256sum the tool provides with the contents of the `.sha256` file. If they are the same, then your file has not been tampered with
+  3. Unzip the `.zip` file
+  4. You can now run it by opening up PowerShell and running `./dyn-wall-rs` in the directory the binary was unpacked. It is recommended to place the binary in your $PATH, so you can use it from anywhere
+
 ## Usage
 Firstly, create a directory and place all the wallpapers you want to cycle through within the directory. Make sure that they are named in numerical order ex. first wallpaper is named 1.png, second wallpaper is named 2.png, etc.