Markdown syntax.

This change contains:
1. LICENSE file was deleted (I need to think about license type),
2. README file has more details,
3. normalize.css was used,
4. https://github.com/richleland/pygments-css (default.css) was used as
pygments.css - this needs to be adjusted.
5. Post model (models.py) was defined,
6. Relative time was used in posts list to tell when post was published,
7. newest and post views were implemented,
8. basic layout,
9. settings adjustment.