[Bro] Add a new protocol

[Siwek, Jonathan Luke]

> However I am stuck at the beginning, I can't found where or how are 
> declared all files.h into CMake (so compile with my news files fails 
> because .o aren't generated).

Adding source code files to the "bro_SRCS" list in src/CMakeLists.txt is typically the right place.

> Also, if you have some good articles or advices which could help me in 
> adding protocols, it would be nice.

The docs at [1] and [2] may be helpful.

    Jon

[1] http://bro.org/development/dpd.html#adding-analyzers
[2] http://bro.org/development/binpac-sample-analyzer.html