Implement Member#role?, fixes #83
Implement Member#role?, fixes #83

meew0/discordrb,megumisonoda/discordrb,VxJasonxV/discordrb,Roughsketch/discordrb,megumisonoda/discordrb,VxJasonxV/discordrb,Roughsketch/discordrb,meew0/discordrb