KeyError: 'twocaptcha'

[MislavSag]

I tried:
solver = CaptchaSolver('twocaptcha', api_key='xxx')

and got error:

KeyError: 'twocaptcha'

[vishnumg]

I'm getting the same error.

[MaxYari]

For anyone wondering it's suppose to be 2captcha, for some reason it's still wrong in the main readme even after commit above.