Add canttalk module, few changes here and there to accomodate for it

tts/BaseEngine/index.js

@@ -1,7 +1,8 @@
 const fs = require('fs');
 
 module.exports = class {
-	constructor(longName, fileExtension, supportedParameters = []) {
+	constructor(shortName, longName, fileExtension, supportedParameters = []) {
+		this.shortName = shortName;
 		this.longName = longName;
 		this.fileExtension = fileExtension;
 	}

tts/espeak/index.js

@@ -3,7 +3,7 @@ const { spawn } = require('child_process')
 
 module.exports = class extends BaseEngine {
 	constructor() {
-		super('ESpeak', 'wav')
+		super('espeak','ESpeak', 'wav')
 	}
 	getDefaultVoice() {
 		return 'en';

tts/gtranslate/index.js

@@ -4,7 +4,7 @@ const tts = require('google-tts-api');
 
 module.exports = class extends BaseEngine {
 	constructor() {
-		super("Google Translate TTS", "mp3");
+		super('gtranslate', "Google Translate TTS", "mp3");
 	}
 	getDefaultVoice() {
 		return 'en-us';

tts/watson/index.js

@@ -4,7 +4,7 @@ const querystring = require('querystring');
 
 module.exports = class extends BaseEngine {
 	constructor() {
-		super("IBM Watson TTS", "ogg");
+		super('watson',"IBM Watson TTS", "ogg");
 		this.voices = {};
 		this.populateVoiceList();
 	}