Document code style/formatting

[Alexey Frunze]

If you're using clang-format or something similar, please document the settings, so the contributors can format their code prior to making pull requests.

[Benoit Jacob]

Very good point. I'm using whatever is default on my Google workstation, and from looking around, it seems that this Google style default is available in standard clang-format,

https://clang.llvm.org/docs/ClangFormatStyleOptions.html

by simply putting

  BasedOnStyle: google

in the appropriate section of the .clang-format file , refer to the above page.

Leaving this bug open until this info is included into documentation... probably just README.