replace functions
replace functions in code
check sandcastle, update CHANGES.md
doc cleanup
cleanup
Merge branch 'master' into replaceGetSetRenderer

Conflicts:
	CHANGES.md
	Source/Renderer/Framebuffer.js
	Source/Renderer/ShaderProgram.js
	Source/Renderer/Texture.js
	Source/Scene/TexturePool.js
	Specs/Scene/TexturePoolSpec.js
default sampler undefined
Merge pull request #1574 from AnalyticalGraphicsInc/replaceGetSetRenderer

Replace get/set functions with properties : Renderer