feat: display the version when starting

Closes #391

Author: vojtajina

lib/server.js

@@ -57,8 +57,8 @@ var start = function(injector, config, launcher, globalEmitter, preprocess, file
   });
 
   webServer.listen(config.port, function() {
-    log.info('Testacular server started at http://%s:%s%s', config.hostname, config.port,
-        config.urlRoot);
+    log.info('Testacular v%s server started at http://%s:%s%s', constant.VERSION, config.hostname,
+        config.port, config.urlRoot);
 
     if (config.browsers && config.browsers.length) {
       injector.invoke(launcher.launch, launcher);

lib/web-server.js

@@ -7,6 +7,7 @@ var httpProxy = require('http-proxy');
 var pause = require('pause');
 var mime = require('mime');
 
+var VERSION = require('./constants').VERSION;
 var helper = require('./helper');
 var proxy = require('./proxy');
 var log = require('./logger').create('web server');
@@ -66,7 +67,8 @@ var createTestacularSourceHandler = function(promiseContainer, staticFolder, ada
     // SERVE testacular.js
     if (requestUrl === '/testacular.js') {
       return serveStaticFile(staticFolder + '/testacular.js', response, function(data) {
-        return data.replace('%TESTACULAR_SRC_PREFIX%', urlRoot.substring(1));
+        return data.replace('%TESTACULAR_SRC_PREFIX%', urlRoot.substring(1))
+                   .replace('%TESTACULAR_VERSION%', VERSION);
       });
     }
 

static/testacular.src.js

@@ -1,4 +1,5 @@
 var CONTEXT_URL = 'context.html';
+var VERSION = '%TESTACULAR_VERSION%';
 
 // connect socket.io
 // https://github.com/LearnBoost/Socket.IO/wiki/Configuring-Socket.IO
@@ -27,7 +28,8 @@ var titleElement = document.getElementById('title');
 var bannerElement = document.getElementById('banner');
 var updateStatus = function(status) {
   return function(param) {
-    titleElement.innerHTML = 'Testacular - ' + (param ? status.replace('$', param) : status);
+    var paramStatus = param ? status.replace('$', param) : status;
+    titleElement.innerHTML = 'Testacular v' + VERSION + ' - ' + paramStatus;
     bannerElement.className = status === 'connected' ? 'online' : 'offline';
   };
 };
@@ -44,6 +46,8 @@ var Testacular = function(socket, context, navigator, location) {
   var hasError = false;
   var store = {};
 
+  this.VERSION = VERSION;
+
   this.setupContext = function(contextWindow) {
 
     var getConsole = function(currentWindow) {