Some typo-errors in pwm in wiringpi_class.py

[oevsegneev]

--def softPwmCreate(_args): ++def softPwmCreate(self,_args): -- return softPwmCrate(_args) ++ return softPwmCreate(_args) --def softPwmWrite(_args): ++def softPwmWrite(self,_args):

[Gadgetoid]

Thanks for spotting this. I realise I'd copied the softPwmCrate error into WiringPiV2 and it's now fixed there.