moved styles / scripts / images into directories for easier working
added npm dependencies to assist with builds
converted NAND.js to use gulp and browserify building
improved the modularity of the build in preparation for other pages
moved adder.js into the modular build
moved memory.js into the modular build
moved more-gates.js into the modular build
moved cpu and binary js files into the gulp build
pulled out common setup into a utility
pulled gate objects out into modules for easier structure
pulled globals out of gates lib and pushed into app pages; also created composite module to wrap all the rendering and mapping behavior