Re: Mention installing html5lib to run the tests in the readme (#543)

I personally solved the issue doing
````
sudo apt-get install pip-python
sudo pip install html5lib
````

View on GitHub: https://github.com/w3c/web-platform-tests/issues/543#issuecomment-32899323

Received on Tuesday, 21 January 2014 16:06:30 UTC