Ubuntu 16.X SWIG bug

[XavierTolza]

On some versions of ubuntu the module does not compile correctly, cmake outputs a warning not stopping the compilation but resulting in a non working OOT module

===== cmake output fragment =========
-- Checking for module SWIG
-- Disabling SWIG because version check failed.
===== fragment end ==================================

When running the module the terminal runs into the following error:
AttributeError: 'module' object has no attribute 'vizsink_b'
The solution found on this bug report is to install the latest version of SWIG:
sudo apt install swig swig3.0
It fixed the bug for me, perhaps you could add it to the readme known bugs section?

[CBrunsch]

Thanks! Added a hint to the README.