better naming standards

command.go

@@ -18,7 +18,7 @@ type Payload func(msg Message) (res string, err error)
 type Message struct {
 	Author  string   //username of message author
 	Words   []string //words from message split on whitespace
-	Message string   //entire message content
+	Content string   //entire message content
 	Channel string   //channel message was sent in
 	Server  string   //guild message was sent in
 }