WIP
WIP
Documentation for new features and hooks.
Merge pull request #23 from zupo/issue_15

Documentation for new features and hooks.
merge
Merge branch 'master' into issue_15
WIP
port py.test stuff to unittest module
WIP
run also flake8 on travis
py3k fixes
correctly handle travis tests
pypy tests should pass now
remember all unknown question parameters to Question.extra dictionary
include changelog in documentation
update HISTORY.rst
correctly parse verbose option
rename validators.py to hooks.py
garden
garden