Merge pull request fffaraz#33 from LB--/add-magnum

Add magnum

Author: fffaraz

README.md

@@ -198,6 +198,7 @@ A curated list of awesome C/C++ frameworks, libraries, resources, and shiny thin
 * [Cairo](http://www.cairographics.org/) - A 2D graphics library with support for multiple output devices. [LGPLv2 or Mozilla MPL]
 * [CImg](http://cimg.sourceforge.net/) - A small, open source, C++ toolkit for image processing. [Own LGPL or GPL]
 * [Horde3D](https://github.com/horde3d/Horde3D) - A small 3D rendering and animation engine. [EPL]
+* [magnum](https://github.com/mosra/magnum) - C++11 and OpenGL 2D/3D graphics engine. [MIT] [website](http://mosra.cz/blog/magnum.php)
 * [Ogre 3D](http://www.ogre3d.org/) - A scene-oriented, real-time, flexible 3D rendering engine (as opposed to a game engine) written in C++. [MIT]
 * [Panda3D](http://www.panda3d.org/) - A framework for 3D rendering and game development for Python and C++. [BSD]
 * [Skia](https://github.com/google/skia) - A complete 2D graphic library for drawing Text, Geometries, and Images. [bSD] [webpage](https://sites.google.com/site/skiadocs/home)