Switched default URL to https

Author: pmeenan

lib/webpagetest.js

@@ -733,7 +733,7 @@ function WebPageTest(server, key) {
 // Allow global config override
 WebPageTest.paths = paths;
 WebPageTest.filenames = filenames;
-WebPageTest.defaultServer = 'http://www.webpagetest.org';
+WebPageTest.defaultServer = 'https://www.webpagetest.org';
 WebPageTest.defaultListenPort = 7791;
 WebPageTest.defaultWaitResultsPort = 8000;