Create README.md

Author: MATEUSZxcv

README.md

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+# Blender ACES converter
+
+### What it does?
+
+Converts **all** textures' color spaces to ACES counterparts. By default it works with [Blender-ACES-Config](https://github.com/Ginurx/Blender-ACES-Config/tree/main) by *Ginurx*, but can be easily [modified](#modifying) to work with any other one (or simply batch change colorspaces, ACES not required).
+
+Before             |  After
+:-------------------------:|:-------------------------:
+![](images/before.png)  |  ![](images/after.png)
+
+### Where to find it?
+
+3D Viewport -> Sidepanel -> Tool -> ACES Converter
+
+<img width="75%" src="images/location.png">
+
+
+### How to use?
+
+1. Open blend file with **default** color managment
+2. Click *`Save`* button
+3. Close blender and change color config
+4. Reopen blend ifle and click *`Load`* button
+
+## Extras
+
+### How it works?
+
+- when *`export`* is clicked script goes through all textures inside current blend file and saves name of colorspace for each one into `tmp.txt`
+- After changing OCIO config (and thus available colorspaces) the previous ones may not exist anymore, so when *`import`* is clicked all colorspaces are set to the ones defined in the script (following the same order from `tmp.txt`).
+
+### Modifying
+
+If you want to use it for other colorspaces (it will be implemented in UI, some day...) then simply change these lines in `script.py`:
+  
+```py
+58            if color[i] == "sRGB":
+59                m.colorspace_settings.name = 'role_matte_paint'
+60            elif color[i] == "Non-Color":
+61                m.colorspace_settings.name = 'role_data'
+62            elif color[i] == "Linear":
+63                m.colorspace_settings.name = 'Utility - Linear - sRGB'
+```