Add npm run visualize command

[mxstbr]

Using the webpack visualizer plugin we can create a visualization where the bundle size comes from, which can be really handy! This should come as a simple npm command, maybe npm run visualize?

---

Note: If you do want to submit a PR work on the v3.0.0 branch please!

[oliverturner]

Nice idea! Can have a crack later if you like

[mxstbr]

Sure thing, would love that!

[oliverturner]

👍

[mxstbr]

How is this coming along @oliverturner, any problems so far?

[oliverturner]

Only the absence of opportunity...

[oliverturner]

Out of interest, is there a reason to use an alternative to the version at http://webpack.github.io/analyse ?

[mxstbr]

Absolutely none, I didn't know an official visualizer exists. (maybe the command should be npm run analyse?)

Take a look at both of them, implement whichever one you prefer and tell my why!

[oliverturner]

That's what I called it before :)

[oliverturner]

I'm inclined to use tools directly associated with the project and supported by the author (particularly in light of the upcoming 2.0 release).

[mxstbr]

Sure thing, sounds like a good reason!

[oliverturner]

I'll get that (and the documentation PR) done tomorrow. Apologies for the delay.

[mxstbr]

No worries, thanks for the help!

[mxstbr]

This is pretty much done in #261, thanks to the always amazing @oliverturner!