Add ac-sources-yasnippet as auto-completion source
Add David Miller's JavaScript and other snippets
Tweak auto-completion setup

Set ac-sources in the right place and accept the defaults for cc-mode
Output a message when npm is not found
Install the relative fringe library, rfringe
Install jshint-mode
Find node.js as either node or nodejs
Install flymake-cursor
Configure flymake

Temporarily disable my custom jshint/closure script
Install js-comint
Run js2-minor-mode as a background linter