Position constant
Improve Strategy
Strategy accepts comment
Improved Strategy class

simplified implementation,
position attributes are lowercase, because it's more pythonic
.strategy files can have extra values set on default
Merge branch 'strategy'
Small changes

* Better readability for console_scripts option.
* Moved code.
* Don't track pytest.ini
* Documentation link to README
* make release pushes to github also
* bumped version number