Add 'Bot' prefix to token (#510)

* Add 'Bot' prefix to token

* Add option for token prefix

* Maybe this is what abal meant?

* Change option name

* Check if token already starts with prefix

docs/docs_client.rst

@@ -64,6 +64,11 @@ shardId
 
 A zero-based integer representing the value of the current shard.
 
+bot
+~~~~~~~
+
+Boolean. Use 'Bot my_token' when authorizing. Default is true, should be false if user bot.
+
 --------
 
 Attributes

src/Client/Client.js

@@ -54,6 +54,7 @@ export default class Client extends EventEmitter {
 		this.options.shardId = options.shardId || 0;
 		this.options.shardCount = options.shardCount || 0;
 		this.options.disableEveryone = options.disableEveryone || false;
+		this.options.bot = options.bot === undefined || options.bot === true ? true : false;
 
 		if (typeof options.shardCount === "number" && typeof options.shardId === "number" && options.shardCount > 0) {
 			this.options.shard = [options.shardId, options.shardCount];

src/Client/InternalClient.js

@@ -521,10 +521,12 @@ export default class InternalClient {
 		this.email = email;
 		this.password = password;
 
+		var self = this;
 		return this.getGateway()
 		.then(url => {
-			this.createWS(url);
-			return token;
+			self.token = self.client.options.bot && !self.token.startsWith("Bot ") ? `Bot ${self.token}` : self.token;
+			self.createWS(url);
+			return self.token;
 		});
 	}