Update README to describe grunt build system
|Reported by:||dmethvin||Owned by:|
For someone who just wants to get up and running building jQuery, the grunt docs aren't clear at all. It's yet not a common enough build system to assume that everyone knows how to get and use it.
The grunt project README assumes the first thing you want to do is set up your own gruntfile, which isn't the case if you just need it to build jQuery. I didn't see any obvious reference to the npm install grunt that's needed, not even in the "Getting Started" guide!
Ideally we'd be able to delegate at least some of this to the grunt README, it really should be there.