Updated README.

README.md

@@ -1,3 +1,35 @@
 # kavita-books-organizer
 
 A simple script that moves single files to a folder with their name so Kavita will work when scanning the library.
+
+## Installation
+
+Clone this repository, then install dependencies:
+
+```text
+npm install
+```
+
+## Usage
+
+Set the `FILES_DIR` environment variable to the parent directory for all the files that need to be organized.
+
+Then simply use:
+
+```text
+npm start
+```
+
+## With Docker
+
+You may use the docker image as such:
+
+```bash
+docker run \
+  -it \
+  --rm \
+  --name=kavita-books-organizer \
+  -e FILES_DIR=/data \
+  -v $PWD/books:/data \
+  code.moonstar-x.dev/public/kavita-books-organizer:latest
+```