Merge pull request #1 from magnunleno/pelican

Simple improvements
Ignore .DS_Store file.
Fixed markup for first post.
Merge pull request #2 from magnunleno/pelican

Adds a better site banner
Deleting files that should not have been committed
Some updates to clean up plugins.
Added LICENSE, CNAME and some updates.
Added post for episode 56.
Fixing typo on Episode 56.
Adds itunes feed generator plugin
Activate and configure the tunes feed generator plugin
Adds the 'podcast' meta tag to almost every episode, couldn't find episodes 3, 9 and 42
Adds requirements file