added/updated readmes

Author: ArthurHeitmann

README.md

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+A collection tools & resources for modding Nier Automata.
+
+# Contents
+
+- CPK, DAT/DTT file contents
+	- [Majority here](./cpkAndDttContents.md)
+	- [cpk015](./cpk015DttContents.md)
+	- [Map](./mapMap/fullMap.md)
+- [Binary Templates](./BinaryTemplates/)
+	- [bxm (binary xml)](./BinaryTemplates/NierA_BXM.bt)
+	- [wem (music files)](./BinaryTemplates/NierA_WEM.bt)
+- Tools
+	- [BXM conversion](./tools/bxmScriptTools/)
+	- [SAR Blender Addon](./tools/NierSarBlenderTools/)

tools/NierSarBlenderTools/README.md

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+Blender addon for viewing and editing Nier Automata .sar files. Sar files seem to contain data about ambient sounds and music.
+
 # Installation
 
 (Requires Blender 3 or later)