Apply node world transform to particle.
Refactor code.
Misc. minor fixes.
Travis CI: API documentation update at 2014-03-02 09:00:47 UTC.
[ci package]
Adjust Lua GC policy, make the fps more smooth.
Merge branch 'master' of https://github.com/urho3d/Urho3D
Merge remote-tracking branch 'upstream/master'

Conflicts:
	Bin/Data/LuaScripts/24_Urho2DSprite.lua
	Source/Engine/LuaScript/LuaScript.cpp
	Source/Engine/LuaScript/pkgs/Math/Vector3.pkg
	Source/Samples/CMakeLists.txt