restructured directories
restructured directories
moved to a python module directory structure
deleted moved directories
Merge branch 'develop'

Conflicts:
	examples/ethane/alkane_tail.py
	mbuild/compound.py
	wip/mpc_monolayer/mpc_monomer.py
	wip/mpc_monolayer/pmpc.py
fixed relative paths in module
moved mktop to wip, removed duplicate files
moved mktop to wip
moved mktop to wip