Add rigid body notebook

4-rigid-bodies/0-initial/.backup/get-contacts.tcl~

4-rigid-bodies/0-initial/.backup/ssb.rigid~

4-rigid-bodies/0-initial/p-coords.dat

4-rigid-bodies/0-initial/ssb.rigid

4-rigid-bodies/4-rigid-bodies.ipynb

4-rigid-bodies/grids/1eyg.charge.dx

4-rigid-bodies/grids/1eyg.elec.dx

4-rigid-bodies/grids/1eyg.vdw0.gencharge.dx

4-rigid-bodies/grids/1eyg.vdw0.pot.dx

4-rigid-bodies/grids/1eyg.vdw1.gencharge.dx

4-rigid-bodies/grids/1eyg.vdw1.pot.dx

4-rigid-bodies/grids/1eyg.vdw2.gencharge.dx

4-rigid-bodies/grids/1eyg.vdw2.pot.dx

4-rigid-bodies/grids/grid-B.dx

4-rigid-bodies/grids/grid-P.dx

4-rigid-bodies/grids/replisome.dx

4-rigid-bodies/load.tcl

4-rigid-bodies/loadRigidBody.procs.tcl