Install node.js dependencies: fails

[darkoverlordofdata]

I'm following the install instructions at http://docs.angularjs.org/misc/contribute, and this step fails:

Install node.js dependencies:

npm install

I get this message in the log:
Please try running this command again as root/Administrator.

this requires
sudo npm install

More info...
After installing as root, I was getting other errors, when running grunt webserver, and grunt test:unit.

I uninstalled everyhing.
Then I installed gunt, and after a few go-rounds, I discovered that I needed to install bower also:

sudo npm install -g grunt-cli
sudo npm install -g bower

After installing these two dependencies, the unprivileged npm install succeeded, as well as the webserver and test suite.

[darkoverlordofdata]

I believe the resolution is to update the installation doc to include these 2 steps

sudo npm install -g grunt-cli
sudo npm install -g bower

prior to

Install node.js dependencies:

npm install

Thanks,
Bruce