Fix DM channel permissions not having read_messages

Author: Rapptz

discord/channel.py

@@ -1259,6 +1259,7 @@ def permissions_for(self, user=None):
         """
 
         base = Permissions.text()
+        base.read_messages = True
         base.send_tts_messages = False
         base.manage_messages = False
         return base
@@ -1432,6 +1433,7 @@ def permissions_for(self, user):
         """
 
         base = Permissions.text()
+        base.read_messages = True
         base.send_tts_messages = False
         base.manage_messages = False
         base.mention_everyone = True