Add readme.md

README.md

+Use flatc.exe in the command line to compile ModeliProtocol.fbs.
+
+For C++: flatc -c ModeliProtocol.fbs creates ModeliProtocol_generated.h.
+
+For C#: flatc -n ModeliProtocol.fbs creates a folder Network.
+
+The namespace is Network. Include the generated files and the neccessary flatbuffer libs (at https://github.com/google/flatbuffers)
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