Basic project layout:
---------------------

	imagegrid/		- domain-specific modules...

	features/		- feature modules...
		_feature.js	- feature template
		all.js		- feature loader
				  this module includes all the
				  feature modules to be used in the
				  system.
		meta.js		- feature configuration and
				  meta-features

	workers/		- workers...

	lib/			- generic library modules...
		widgets/	- generic widgets...
		_module.js	- module template...
		_template.js	- generic js file template...

	ext-lib/		- external library modules...

	node_modules/		- npm modules...
		ig-*/		- ImageGrid npm modules

	css/			- css/less files
		widgets/	- widget-specific css...

	images/			- system images...

	doc/			- various documentation...
		PROJECT-LAYOUT	- this file
		BUILD-NOTES	- notes on the build process
		NOTES		- general notes...

	experiments/		- standalone experiments...

	package.json		- npm/nw configuration...
	ig.js			- CLI entry point...
	index.html		- Browser/NW entry point...
	ui.js			- GUI root setup...