major rewrite
fixed plotting, angle, dihedral
fixed periodic boundary bug in rules, tested and fixed monolayer
building blocks for pMPC brushes
added new coordinate transformations to change basis, first cut of MPC chains
work in progress: coordinate transformation
Merge remote-tracking branch 'origin/mbuild_0_2'

Conflicts:
	lammps_testing/bmim.input
	lammps_testing/bmim.lmp
fix axis transformation