Webpack 2: Installation of beta tag broken on NPM

[ryanwilsonperkin]

Hello!

Just noticed that the recommended installation method for webpack (npm install --save-dev extract-text-webpack-plugin@beta) appears to be broken. Not super familiar with npm's version specifiers, but this could have to do with the v2.0.0 push that happened a few hours ago.

Perhaps the recommendation is just "update to 2.0.0 now"?
If so let me know and I'd be happy to submit a PR to update the docs.

OS: Mac OS X 10.11.6
Node: 4.7.3
NPM: 4.2.0

To reproduce:

$ npm install extract-text-webpack-plugin@beta
npm ERR! Darwin 15.6.0
npm ERR! argv "/Users/ryan/.nvm/versions/node/v4.7.3/bin/node" "/Users/ryan/.nvm/versions/node/v4.7.3/bin/npm" "install" "extract-text-webpack-plugin@beta"
npm ERR! node v4.7.3
npm ERR! npm  v4.2.0
npm ERR! code ETARGET

npm ERR! notarget No compatible version found: extract-text-webpack-plugin@beta
npm ERR! notarget Valid install targets:
npm ERR! notarget 0.1.0, 0.1.1, 0.1.2, 0.2.0, 0.2.1, 0.2.2, 0.2.3, 0.2.4, 0.2.5, 0.3.0, 0.3.1, 0.3.2, 0.3.3, 0.3.4, 0.3.5, 0.3.6, 0.3.7, 0.3.8, 0.4.0, 0.5.0, 0.6.0, 0.7.0, 0.7.1, 0.8.0, 0.8.1, 0.8.2, 0.9.0, 0.9.1, 1.0.0, 1.0.1, 2.0.0-beta.0, 2.0.0-beta.1, 2.0.0-beta.2, 2.0.0-beta.3, 2.0.0-beta.4, 2.0.0-beta.5, 2.0.0-rc.0, 2.0.0-rc.1, 2.0.0-rc.2, 2.0.0-rc.3, 2.0.0
npm ERR! notarget
npm ERR! notarget This is most likely not a problem with npm itself.
npm ERR! notarget In most cases you or one of your dependencies are requesting
npm ERR! notarget a package version that doesn't exist.

npm ERR! Please include the following file with any support request:
npm ERR!     /Users/ryan/.npm/_logs/2017-02-24T20_16_50_334Z-debug.log

[joshwiens]

@ryanwilsonperkin - The as of this morning, the beta tag would have been a version behind latest which would have cause other issues.

The beta tag in npm no longer exists so yes, npm i extract-text-webpack-plugin@latest --save is the correct route.

[joshwiens]

In the next day or two, the beta tag will be used to published v2.1.0-beta.0 which has a few pull request waiting to merge on the 2.0.0 release.

[ryanwilsonperkin]

Looks like @candu beat me to it in #432
Thanks! We'll update our package.json