"npm install bootstrap@latest" now installs v4 alpha instead of 3.3.6

Created by: arechsteiner

With npm, using

npm install bootstrap --save causes "bootstrap": "~4.0.0-alpha.2" being installed and added as a dependency to package.json.

In bower on the other hand, bower install bootstrap --save installs and saves the latest stable version (3.3.6), as expected.