Added rules for Huffington Post and Washington Post

Tested on two articles for Huffington Post:
- [x] http://www.huffingtonpost.com/2014/07/24/things-you-never-knew-about-tequila_n_5589092.html
- [x] http://www.huffingtonpost.com/2014/07/09/latin-summer-food_n_5359280.html

And one article for Washington Post Brand Connect:
- [x] http://www.washingtonpost.com/sf/brand-connect/wp/enterprise/one-year-later-a-commitment-renewed/

Let me know if you find any articles that these rules do not work for.