Add include section

[Keyaku]

I'm not sure if this is a good convention, but what about a include directory?

[koistya]

@Keyaku can you give some examples, what this directory is used for?

[Keyaku]

@koistya Generally, it's used to add library headers to conveniently give less build hassles.

Here's an example.

I'm solely suggesting, since this has its own drawbacks.

[koistya]

I guess this is mostly relevant to C++ projects?

[Keyaku]

It's relevant to any kind of project. Of course, it mostly works with C/C++.