Added README.

README.md

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+Magnum is currently an simple OpenGL 3 graphics engine, not using any deprecated
+functionality. It's currently used in Kompas 3D map view plugin.
+
+INSTALLATION
+============
+
+Dependencies
+------------
+
+ * CMake    - for building
+ * OpenGL headers (on Linux most probably shipped with Mesa)
+ * GLEW     - OpenGL extension wrangler
+ * GLUT     - optionally, for examples
+ * Qt       - optionally, for unit tests
+
+Compilation, installation
+-------------------------
+
+    mkdir -p build
+    cd build
+    cmake -DCMAKE_INSTALL_PREFIX=/usr .. && make
+    make install
+
+Some examples of engine usage are stored in examples/ directory, if you want to
+build them, pass -DBUILD_EXAMPLES=True to CMake. Examples use the GLUT library.
+If you want to build also unit tests (which are not built by default),
+pass -DBUILD_TESTS=True to CMake. Unit tests use QtTest framework.
+
+CONTACT
+=======
+
+Want to learn more about the library? Found a bug or want to tell me an
+awesome idea? Feel free to visit my website or contact me at:
+
+ * Website - http://mosra.cz/blog/
+ * GitHub - http://github.com/mosra
+ * E-mail - mosra@centrum.cz
+ * Jabber - mosra@jabbim.cz