Adding 'features' attribute to switch class.
Adding 'features' attribute to switch class.

FIX #31

diraol/kytos,renanrodrigo/kytos,diraol/kytos,erickvermot/kytos,cemsbr/kytos,diraol/kytos,kytos/kytos,macartur/kytos,cemsbr/kytos,cemsbr/kytos,kytos/kyco,erickvermot/kytos,erickvermot/kytos