Internationalization

[Sabst]

Hi,
Lettuce supports multiple languages. lettuce_webdriver should support those languages too.
Or at least, defining new translations should not duplicate the webdriver logic (for now I copied webdriver.py steps to my terrain.py file and translated the steps).

[Sabst]

Here is my current workaround to avoid duplicating code. Any better solution is welcome.
... something like in my terrain.py file (indentations do not appear):

@step('je devrais voir "([^"]+)"$')
def should_see(step, text):
for regex, func in STEP_REGISTRY.items():
matched = (regex == r'I should see "([^"]+)"$')
if matched:
func(step, text)
break