Adds options.headers being set on any request to files within the content base.
webpack/webpack-dev-server#80: Adds hostname option

This allows to specify the hostname/IP address the dev server should
bind to.
Add 'https' option to allow secure dev server

There are some cases where it is useful to serve assets via HTTPS.
Includes a self-signed certificate that is used when serving the requests.
Should not be used in production, but neither should webpack-dev-server.
Merge pull request #83 from wrobel/feature/variablehostname

webpack/webpack-dev-server#80: Adds hostname option
Merge branch 'https' of https://github.com/diurnalist/webpack-dev-server

Conflicts:
	bin/webpack-dev-server.js
Merge pull request #70 from tdeekens/feature/contentbaseheaders

Adds options.headers being set on any request to files within the content base
Merge pull request #2 from webpack/master

Merge latest from origin/master.