Merge branch 'feat/rbparticles' into release

src/BrownParticlesKernel.h

src/ComputeForce.cu

src/ComputeForce.h

src/ComputeGridGrid.cu

src/ComputeGridGrid.cuh

src/Configuration.cpp

src/Configuration.h

src/GrandBrownTown.cu

src/GrandBrownTown.cuh

src/GrandBrownTown.h

src/Makefile

src/RigidBody.cu

src/RigidBody.h

src/RigidBodyController.cu

src/RigidBodyController.h

src/RigidBodyType.cu

src/RigidBodyType.h