classes. Also create a SimulationManager in charge of
running the simulation.

- Also replace GL/glew by vtk_glew in Core/RenderDetail
- Remove empty first line in those

Add namespace to matrices.

Closes #61

Removing RenderDelegates, OpenGLRenderer, OpenGLViewer

- need glew.h in Core/RenderDetail for GLint
- need to link against Geometry in AVMNidus
- remove duplicated library in Rendering

The reason why the libusb1 was not found by find_* was
strangely because of the veriable name. Seem that find_*
do not like numers in the name.

Fix rebase conflicts.

Gives reference to sf::Image

Add cmake logic so Assimp zlib can be found
in release mode.

Also enable and test force feedback.

SimMedTK is using VRPN compiling properly.
Most of the VRPN stuff is compiling, but linking has some issues.
Somehow VRPN is adding libs that doesn't exist to the VS project for
linking. WIP Adds basic reading functionality from a networked
phantom omni.  Some misc changes happened in this commitsuch as some
namespace changes and framework start up and shutdown flow. Added a
vrpnPhantomController.  Abstracted out renderCube a little because
it gets used in other places. Fixed a few compiler warnings

Many other cmake improvements.

Fix GLEW/GLU dependency mess.

Set build configuration variables and pass down to to superbuild
external projects.

1. Removing GLEW external project. Glew is now
built with vtk, in order to use it just include
the vtk use file and add the vtkglew library
to the target link directive.

2. BUILD_SHARED_LIBS is now forced to be OFF for
Windows MSVC builds.

Build external shared libs in order to avoid linking issues in windows.

Also abstracted out some of the RTT code and put it in the example lib.

-Has some general fixes(wrong types and stuff).
-Fixes the in-house openGL renderer.
-Fixes Oculus support.
-Moved around some stuff in the renderers.
-Generalized RenderCube to be an example scene so
all the other cube based examples can use common code.

delegates.
The way render delegates need a bit of work.

Automating the way renderers are loaded.

Fix broken tests.
The renderCube example is broken now. Submitting patch soon.

Revert to build command in the Superbuild so that parallel
build work again.

This data mapper allows you to map external data into the
vtkDataArray.
This in turn allows you to interface with vtk without
repacking the simulatordata.

Clean up and implement a pimpl VtkRenderer to hide
redering implementation.

Replace core::StdVector3d with std::vector<core::Vec3d>

because eigen 3d vector array is aligned
by default so no special allocator is needed. See core::StdVector3d
for more details.

Also renmamed many unseen sm* class names.