Cleanup release

• --help invocation fixes
• cleanup npm's config.registry on exit
• adds support for non-standard alternative versions

Rainbow Unicorn

• No longer presents paths to local files through the proxy
• use PATH to find npm instead of hardcoded /usr/bin/path
• update dependencies

Green Oak

Fixes stalling of npm install when dependencies are not found.

Red Oak

• catches errors from npm

Fireworks

First version. Should be able to resolve and install