add Editor and Scripts readmes

Editor/README.md

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+# Editor
+
+Files for using the Unity editor
+
+## Installation
+
+Place the "Editor" folder anywhere in your project Assets folder. 
+
+## Usage
+
+### MeshPostProcessor
+
+Used to perform various operations to models on import to unity
+
+###### Add Colliders
+
+To convert objects to colliders on import, add the following strings to the object's name:
+
+* `_COLLIDER`: Converts to a mesh collider
+
+* `_SPHERECOLLIDER`: Converts to a sphere collider
+
+* `_CAPSULECOLLIDER`: Converts to a capsule collider, with the axis along the object's longest axis
+
+* `_BOXCOLLIDER`: Converts to a box collider. The box will be aligned to the object's local coordinates
+
+###### Merge Meshes
+
+Add `_MERGE` to an object's name, and all its child objects meshes will be automatically merged into one. Does not work for skinned meshes
+
+###### Delete Objects
+
+Add `_DEL` to an object's name to delete it on import
+
+###### Trim animations
+
+Automatically removes any animations with only 2 keyframes to make them easier to edit manually
+
+
+### TexturePostProcessor
+
+Used to perform various operations on textures on import to Unity. Configured with constants in the top of the file.
+
+Only works on files with the extension `EXTENSION` (default ".png").
+
+###### Specular maps
+
+If `SPEC_ENABLE` is enabled (default true), textures with the suffix `SPEC_TAG` (default "-spec") will be copied into the alpha channel of the texture without that suffix. For example, the file `foo-spec.png` will be copied into the alpha channel of the imported texture `foo.png`.
+
+###### Normal maps
+
+If `NORMAL_ENABLE` is enabled (default true), textures with the suffix `NORMAL_TAG` (default "-spec") will be marked as normal maps on import and when KSP PartTools exports the texture. if `NORMAL_GENERATE` is enabled (default true), then the texture will automatically be converted from a hightmap using Unity's normal map generation tool. 

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`