Cmake rules for Libpng.
Base functionality for reading PNG image files.
Configuration for Vim Clang plugin.
Color_of method declaration.
Some base code read Png image data.
Setting proper compilation options for Boost's Program Options library.
Image::png class implementation

This class provides basic functionality for accessing PNG images. At the moment
it allows to get a RGB value from the specific pixel. This is sufficient
functionality at the current stage of the project.
Merge branch 'libpng_integration'