add CMake doxygen to build system, fix headers/footers
add doxygen file
Revert "add CMake doxygen to build system, fix headers/footers"

This reverts commit d42735960b2a04142b5cda1ac9d9ad290ae9c1bc.
use CMake to setup Doxygen build
Merge pull request #26 from firefly2442/doxygen-cmake

Add doxygen build system into CMake (just like SFML)
Updated line endings to LF in CMakeLists.txt
Merge branch 'CMakeDirected' of https://github.com/Yalir/sfeMovie into CMakeDirected
Typo
Replaced FindFFMPEG.cmake with a version from OSG and updated CMakeLists.txt to use it (still a few things to fix with relative paths vs full paths)
Improved finding of provided FFmpeg libraries (still need to handle the case where libraries aren't built yet and CMake can't find them)