Add config option for Google Analytics, Disqus, Facebook and Twitter in one place
Add config option to set blog name
Add config option to set blog base title
Add config option to set Github and Twitter profile links
Add config option to set maximum posts on main page and on feeds
Add config option to set the content size for previews
Merge pull request #3 from diogum/master

Merge pull request, fix #2 add a configuration file