rename Code to code

code/__init__.py

code/docs/Code.rst

code/docs/Makefile

code/docs/_static/custom_width.css

code/docs/conf.py

code/docs/index.rst

code/docs/make.bat

code/docs/modules.rst

code/docs/readme_link.rst

code/example_generic.py

code/example_mass_dem.py

code/example_mass_dem_ni.py

code/example_mass_sb.py

code/example_resistor.py

code/models.py

code/plot_utility.py

code/utility.py

code/visualization_sampler.py