message: Updated readme: added License paragraph
diff: @@ -37,6 +37,7 @@ so it must always be handled first.
  - [Low-level API interoperability](#low_level_api_interoperability)
  - [Repository structure](#repository_structure)
  - [Contributing](#contributing)
  +- [License](https://github.com/DiligentGraphics/DiligentCore#license)
  - [References](#references)
  - [Release History](#release_history)
  @@ -685,11 +686,23 @@ objects. Refer to the following pages for more information:
  | [Platforms/Linux](https://github.com/DiligentGraphics/DiligentCore/tree/master/Platforms/Linux) | Implementation of platform-specific routines on Linux platform |
  | External | Third-party libraries and modules |
  +# License
  +
  +See [Apache 2.0 license](License.txt).
  +
  +This project has some third-party dependencies, each of which may have independent licensing:
  +
  +* [SPIRV-Cross](https://github.com/KhronosGroup/SPIRV-Cross): SPIRV parsing and cross-compilation tools.
  +* [SPIRV-Headers](https://github.com/KhronosGroup/SPIRV-Headers): SPIRV header files.
  +* [SPIRV-Tools](https://github.com/KhronosGroup/SPIRV-Tools): SPIRV optimization and validation tools.
  +* [glslang](https://github.com/KhronosGroup/glslang): Khronos reference compiler and validator for GLSL, ESSL, and HLSL
  +* [glew](http://glew.sourceforge.net/): OpenGL Extension Wrangler Library
  +
  <a name="contributing"></a>
  # Contributing
  To contribute your code, submit a [Pull Request](https://github.com/DiligentGraphics/DiligentCore/pulls)
  -to this repository. **Diligent Engine** is licensed under the [Apache 2.0 license](License.txt) that guarantees
  +to this repository. **Diligent Engine** is distributed under the [Apache 2.0 license](License.txt) that guarantees
  that code in the **DiligentCore** repository is free of Intellectual Property encumbrances. In submitting code to
  this repository, you are agreeing that the code is free of any Intellectual Property claims.
  