Add re-generate docs.

README.regenerate.md

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+To re-generating the bindings
+-----------------------------
+
+You will need to install LuaNativeObjects and set the CMake variable `USE_PRE_GENERATED_BINDINGS` to FALSE.
+By default CMake will use the pre-generated bindings that are include in the project.
+
+Build Dependencies
+------------------
+
+Optional dependency for re-generating Lua bindings from `*.nobj.lua` files:
+
+* [LuaNativeObjects](https://github.com/Neopallium/LuaNativeObjects), this is the bindings generator used to convert the `*.nobj.lua` files into a native Lua module.
+