[chore] comments and function scope

- methods no longer exported if not used
- readme update
- comments updated

command.go

@@ -2,23 +2,23 @@ package bolt
 
 import "time"
 
+// custom Discord commands
 type Command struct {
 	Trigger string        //command that triggers payload NOT including the indicator
 	Payload Payload       //payload function to run when a command is detected
-	Timeout time.Duration //the amount of time before command can run again
+	Timeout time.Duration //the amount of time before command can be run again
 	lastRun time.Time     //timestamp of last command run
-	Roles   []string      //roles that can use command
+	Roles   []string      //roles that can use command, if none are set anyone can run the command
 }
 
-// payload function type handling commands. The returned error is parsed and, if no error,
-// is detected then the response string (res) will be sent in response to the command message
+// command payload functions, any strings returned are sent as a response to the command
 type Payload func(msg Message) (string, error)
 
-// contains the basic information needed for a message command
+// message information passed to payload function
 type Message struct {
 	Author  string   //username of message author
 	Words   []string //words from message split on whitespace
 	Content string   //entire message content
-	Channel string   //channel message was sent in
-	Server  string   //guild message was sent in
+	Channel string   //message channel
+	Server  string   //message guild
 }