Match desktop OpenGL behavior with Direct3D: check that fullscreen window size is a valid resolution and do not enter fullscreen mode if it isn't. Closes #52.
Document the importance of URHO3D_STATIC_DEFINE when static linking.
Do not play audio in the editor when scene updates are paused. This allows making oneshot sound prefab objects without them losing their sound resource assignments.
Add new 'doc' target for generating Urho3D documentation.

make clean
make all
make doc      <-- New target
make install
Refactor to keep the Docs directory clean from temp. build files.

- Move the temp. build files for documentation building to its own build directory.
- Add new build option to include documentation build as part of the normal build (not enabled by default).
- Document the documentation building process.
Clean up the documetation.
Added "Is Playing" attribute to SoundSource. SoundSource no longer clears the sound resource when playback is finished. Closes #54.
Updated comment.
Fix minor typo error.
Build Lua and LuaJIT standalone interpreter and bytecode compiler.

Use the internal standalone lua/luajit interpreter for dumping LuaScript API doxygen file.
Clean up build script.