Use  snaptortoise/jekyll-rss-feeds to generate an RSS feed for the blog

See https://github.com/snaptortoise/jekyll-rss-feeds
Merge pull request #6 from simao/rss_feed

Use snaptortoise/jekyll-rss-feeds to generate an RSS feed for the blog
New url structure. Base path left blank unless a project page. Feed.xml links updated. RSS icon added.
merge