An error "malformed archive" may appear when linking against cef
library.

An additional symbolic link may be required. See
http://www.magpcss.org/ceforum/viewtopic.php?f=6&t=10241
Removed the GUI controller for this release
This should make CEF easier to deal with

instead of copying libs to build/bin, keep them in cef/bin, and cmake will copy them automatically in the post-build phase
README updates per danix's comments
changed include gaurds for Renderable.h
OpenGLSystem and related classes moved to systems/opengl
RenderTarget moved to its own file(s)
RenderTarget is a full class, no longer a struct

Creating textures and buffers is now handled inside RenderTarget, and
OpenGLSystem just hooks into that
missed an include update