add Editor and Scripts readmes

Scripts/README.md

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+# Scripts
+
+Bash scripts for interacting with files
+
+## Installation
+
+All files require bash to be installed (default location of `/bin/bash`). 
+
+`convert2dds` and `dds2png` require [ImageMagick](https://imagemagick.org/index.php) and [Nvidia Texture Tools](https://github.com/HeliumProject/NvidiaTextureTools) to be installed and available in your `$PATH`.
+
+## Usage
+
+### convert2dds
+
+converts any number of files to `.dds` format, automatically choosing dxt1 or dxt5 depending on if the source image has anything in its alpha channel. Designed to be used with a glob, e.g: `convert2dds *.png`
+
+### dds2png
+
+converts any number of files to `.png` from `.dds`. Designed to be used with a glob, e.g: `dds2png *.dds`