fix bug with enable pin

Atm_AccelStepper.cpp

@@ -556,11 +556,13 @@ int Atm_AccelStepper::limitHigh_avg(bool limistate){
 Atm_AccelStepper& Atm_AccelStepper::setEnablePin( int enablePin ){
   _enablePin = enablePin ;
   pinMode(_enablePin, OUTPUT);
+  stepper->setEnablePin(_enablePin);
   return *this;
 }
 
 Atm_AccelStepper& Atm_AccelStepper::pinReversed( bool directionInvert,
                               bool stepInvert, bool enableInvert){
+  _enableReversed = enableInvert ;
   stepper->setPinsInverted(directionInvert, stepInvert, enableInvert);
   return *this;
 }