Add the custom signature management

lib/telegram.link.js

@@ -11,6 +11,7 @@ var telegramMt = require('telegram-mt-node');
 var auth = telegramMt.auth;
 var utility = telegramMt.utility;
 var net = telegramMt.net;
+require('colors');
 // ***
 
 // This module is the entry-point of **Telegram.link** library and provides the highest-level **interface** to communicate
@@ -48,7 +49,7 @@ var net = telegramMt.net;
 
 // The code:
 function createClient(appId, primaryDC) {
-    var args = arguments;
+    var args = Array.prototype.slice.call(arguments);
     var options = {};
     var callback;
     if (typeof args[2] === 'object') {
@@ -102,9 +103,9 @@ require('util').inherits(Client, require('events').EventEmitter);
 // - **authKey**: the authentication key exchanged with Telegram
 
 // The code:
-Client.prototype.createAuthKey = function(callback) {
+Client.prototype.createAuthKey = function (callback) {
     if (callback) {
-        this.once(exports.EVENT.AUTH_KEY_CREATE, function(auth) {
+        this.once(exports.EVENT.AUTH_KEY_CREATE, function (auth) {
             this._authKey = auth.key;
             this._serverSalt = auth.serverSalt;
             callback(auth);
@@ -128,7 +129,7 @@ Client.prototype.createAuthKey = function(callback) {
 // The last parameter **callback** will be added as a listener for the `end` event
 
 // The code:
-Client.prototype.end = function(callback) {
+Client.prototype.end = function (callback) {
     if (callback) {
         this.once(exports.EVENT.END, callback);
     }
@@ -152,7 +153,7 @@ function connect() {
 
 // The code:
 function createEventEmitterCallback(event) {
-    return function(ex) {
+    return function (ex) {
         if (ex) {
             this.emit(exports.EVENT.ERROR, ex);
         } else {
@@ -182,6 +183,20 @@ function createEventEmitterCallback(event) {
 
 // ***
 
+// Print the library version
+module.exports = exports = function (signature) {
+    if (signature !== false) {
+        console.log('\n' + (signature || staticInfo.signature.cyan));
+        var caption = signature ?
+            'powered by telegram.link' :
+            ('v.' + require('../package.json').version);
+        console.log(caption.gray + '\n');
+    }
+    return module.exports;
+};
+
+// ***
+
 // Export the event names:
 exports.EVENT = {
     ERROR: 'error',
@@ -196,12 +211,6 @@ var staticInfo = require('./static');
 exports.TEST_PRIMARY_DC = staticInfo.telegram.test.primaryDataCenter;
 exports.PROD_PRIMARY_DC = staticInfo.telegram.prod.primaryDataCenter;
 
-// ***
-
-// Print the library version
-console.log(staticInfo.signature);
-console.log('v.%s', require('../package.json').version);
-
 // Register the project name on the logging system
 var getLogger = require('get-log');
 getLogger.PROJECT_NAME = require('../package.json').name;