docs: Updated README.md.

README.md

@@ -1,4 +1,26 @@
-#
+# nu-ffmpeg
+
+Utility commands for working with ffmpeg in nushell.
+
+## Capabilities
+
+- Return tables from `ffprobe`
+- `ffprobe` multiple files at once
+- Use `streams`, `streams video`, and `streams audio` to filter `ffprobe` output
+- get the `dimensions` of a video stream as a record
+- Apply and parse complex filters to a video (Work In Progress)
+
+## Setup
+
+The `ffmpeg` and `ffprobe` commands are required to be installed and available
+in your path; they are not installed for you.
+
+Currently nushell versions 0.87.0 - 0.88.1 are supported.
+
+After that, clone this repository and add the following code to your scripts,
+or to your `config.nu` file:
 
 ```nu
-use ./ffprobe
+use <path-to-repository>/ffprobe
+use <path-to-repository>/filters *
+```