Readme and building docs updated

README.md

@@ -58,9 +58,6 @@ Order is a subject to change, but here are main things to do:
 This part of the description would be updated during the development of the project, at the moment there is nothing to build here.
 All updates will be located here: [BUILDING.md](docs/BUILDING.md)
 
-#### Docs
-[Code style](docs/CODESTYLE.md) - code style may confuse you. But there is an explanation for that :)
-
 #### Sponsors
 This project is GitHub-sponsored by:
 * [Traverse-Research](https://github.com/Traverse-Research)

docs/BUILDING.md

@@ -13,11 +13,23 @@ But this libraries and tools you have to install by yourself:
 
 ## Building for Windows
 Windows is the only one platform, which is supported at the moment.
-- install latest release of Intel Embree from [GitHub](https://github.com/embree/embree/releases)
+- download and install the latest release of Intel Embree from [GitHub](https://github.com/embree/embree/releases)
 - copy embree binaries (embree3.dll and tbb12.dll) to "bin" folder in the root directory of etx-tracer;
 - and then building should be as simple as creating a folder for build files and calling CMake, something like:
 ```
 cmake -G "Visual Studio 17 2022"  ..
 ```
 
+## Built-in dependencies
+These libraries are included into the source code in `thirdparty` folder:
+- [enkits](https://github.com/dougbinks/enkiTS) - A permissively licensed C and C++ Task Scheduler for creating parallel programs
+- [glm](https://github.com/g-truc/glm) - OpenGL Mathematics
+- [imgui](https://github.com/ocornut/imgui) - Dear ImGui: Bloat-free Graphical User interface for C++ with minimal dependencies
+- [jansson](https://github.com/akheron/jansson) - C library for encoding, decoding and manipulating JSON data
+- [mikktspace](https://github.com/mmikk/MikkTSpace) - A common standard for tangent space used in baking tools to produce normal maps.
+- [sokol_app, sokol_gfx, sokol_imgui](https://github.com/floooh/sokol) - minimal cross-platform standalone C headers
+- [stb_image](https://github.com/nothings/stb) - stb single-file public domain libraries for C/C++
+- [tinyexr](https://github.com/syoyo/tinyexr) - Tiny OpenEXR image loader/saver library
+- [tinyobjloader](https://github.com/tinyobjloader/tinyobjloader) - Tiny but powerful single file wavefront obj loader
+