Add Server override files

Add Server override files.  Add erdlu AC notes, update readme.

README.md

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 # NWNDS
 Repository for the code & various resources for the NWN Dark Sun project.
+
+## Features
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+PRC 4.1.4a & 3 custom Dark Sun 3.5e classes, with more to come.
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+20+ Custom Dark Sun Races.
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+5 Dark Sun Animal Companions, with more to come.
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+Custom Overworld Map System with over 5100 kilometers of Athasian terrain to explore.
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+