Add get_default_role for servers to get the 'everyone' role.
Add get_default_role for servers to get the 'everyone' role.

Rapptz/discord.py,imayhaveborkedit/discord.py,Harmon758/discord.py,khazhyk/discord.py,mgardne8/discord.py,Theoretical/UselessBot,rapptz/discord.py,lgkern/PriestPy,eartsar/discord.py,jhgg/discord.py,variablehair/Eggplantato,Harmon758/discord.py,megamit/discord.py