Many are formating changes and others are
bug fixes as well as some refactoring.

from SimMedTK to iMSTK.

Modify the license notice in each file.
Add LICENSE file.

from SimMedTK to iMSTK.

Modify the license notice in each file.
Add LICENSE file.

by examples and unit tests.

Implement missing methods and logic.

Add an alias for a matrix map.
Create a templated method in the MeshModel and IOMesh to automatically
cast the underlying mesh.

Create an interpolate() method in the VegaVolumetricMesh class to
interpolate surface of the underlying volumetric mesh with an external
surface mesh and clean up the interface.

Create a computeGravity() method in the VegaVolumetricMesh class
to compute gravity forces.

Refactor getVelocity() method in DeformableSceneObject and add a
variable to hold the gravity vector.

Refactor SceneObject. Add SceneModelRenderDelegate render delegate to
take care of renderign operations for this model. Create visual,
physics and collision model variables.

Remove render delegates from the StaticSceneObject, this is now handled
by it base class.

Add storage for the gravity force in VegaFEMDeformableSceneObject and
initialized properly. Compute internal force by multiplying K*positions
instead of calling the vega function.

Refactor DefaultSimulator, VegaFEMModelSimulator. This class will be
marked obsolete soon.

in the Scene objects.

* Remove custom renderers
* Remove local storage for vertices
* Documenting

Small format changes all over the place.

Use the model from SceneObject to laod meshes.

initialized from Vega matrices. The ode rhs
now considers damping only if the coefficients are
positive, non zero. It also accumulates contact forces
if any. The updateAttachedMesh in the VegaVolumetricMesh
class now takes an Eigen vector to do the update.

in favor of their own "GenerateCompressedRowMajorFormat" routine.

Refactor ObjectSimulator.

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