Merge branch 'refactoring' into devel

.travis.yml

cmake

include/hpp/fcl/collision.h

include/hpp/fcl/collision_func_matrix.h

include/hpp/fcl/distance.h

include/hpp/fcl/distance_func_matrix.h

include/hpp/fcl/mesh_loader/assimp.h

src/BVH/BVH_model.cpp

src/collision.cpp

src/collision_func_matrix.cpp

src/distance.cpp

src/distance_box_halfspace.cpp

src/distance_box_plane.cpp

src/distance_box_sphere.cpp

src/distance_capsule_capsule.cpp

src/distance_capsule_halfspace.cpp

src/distance_capsule_plane.cpp

src/distance_cone_halfspace.cpp

src/distance_cone_plane.cpp

src/distance_cylinder_halfspace.cpp