Add Netlify configuration.

- The netlify.toml file explains how to build this site for production
  and deploy previews.
- The Makefile has some commands to make building the site slightly more
  user friendly, try typing `make help`.
- The Gemfile includes all the dependencies exported from GitHub Pages.
  This site might not need all of the but I don't have the knowledge to
  exclude the unused ones.

Signed-off-by: David Calavera <david.calavera@gmail.com>

package.json

@@ -1,14 +0,0 @@
-{		
-  "name": "githubpagessites",		
-  "description": "Version 1.1 of the docs for Kubernetes",		
-  "version": "1.1",		
-  "private": true,		
-  "license": "Apache Version 2.0",		
-  "author": "The Kubernetes Authors",		
-  "engines": {		
-  "node": "~4.2"		
-},		
-  "dependencies": {		
-    "express": "^4.13.4"		
-  }		
-}