Prepare directories structure for documentation.
Merge pull request #6 from DolotovEvgeniy/FilmGrain-implementation

Film grain implementation
Merge branch 'master' into sepia_documentation
Configuration of the documnetation was modified.
Sepia.rst was modified.
Merge pull request #15 from valentina-kustikova/sepia_documentation

Create basic structure of documentation files. Write dummy documentation for sepia filter.
Modify CMakeLists for code samples to make it automatically scan for .cpp files in ./samples directory and build executables for each of them.
Change samples' executables directory to the root build directory of the library.
Merge pull request #18 from druzhkov-paul/samples_auto_build

Auto detection and build of samples.
Update README.md

Add a link to documentation
Merge branch 'master' into FilmGrain-implementation