Add gruntjs installation howto

[anselmbradford]

This howto can be brief and look like this:

1. Install NPM
2. From the command line, run sudo npm install -g grunt-cli. Enter your system password and hit return.

The grunt command will now be available globally on your system.

[migurski]

What does grunt do?

[anselmbradford]

It's a build task runner, like Apache Ant. It automates things like linting and minifying JS/CSS, moving files around for dev/production setups, etc.

[migurski]

Is it the kind of thing where there are a bunch of tools in the Node ecosystem right now that do this, or is Grunt the one main one?

[anselmbradford]

Grunt is the major one I'm aware of that has been around awhile. Gulp is another one that is more recent and has gotten attention as a possible Grunt replacement.

FWIW here's the grunt/gulp code mentions:
https://github.com/search?l=javascript&q=gruntfile.js&ref=searchresults&type=Code
https://github.com/search?q=gulpfile.js&type=Repositories&ref=searchresults

And repo activity:
https://github.com/gruntjs/grunt/graphs/contributors
https://github.com/gulpjs/gulp/graphs/contributors

Here's a recent post on comparisons of task runners in the node world.