[npm] take fetch name

[aeosynth]

the fetch npm name has been offered by @andris9, and github/fetch is using whatwg-fetch.

[bitinn]

Ah thx, i saw that, but decided to leave it be, given it's quite easy to find node-fetch anyway :)

Though if Andris isn't working on fetch anymore, a pull request to clarify module status in readme would be good, so people don't need to figure out if fetch follows whatwg.

[aeosynth]

it's your decision, but the use of node is discouraged:

https://docs.npmjs.com/files/package.json:

• Don't put "js" or "node" in the name. It's assumed that it's js, since you're writing a package.json file, and you can specify the engine using the "engines" field. (See below.)

with iojs gaining popularity, node is slightly anachronistic

[bitinn]

hopefully this module will be compatible with iojs without change, if not I will need to look into it in the future.

node-fetch is in a special position where whatwg spec isn't stable yet, and it splits between client-side and server-side (since npm is runtime agnostic, but runtime has different strength and weakness), so I feel ok violating npm best practice :)

[caub]

it would be much easier to use the name fetch on npm

I imagine many people make the mistake, or didn't find this package