docs(testing): revert to jasmine v.2.4.1 (#2697)

Bug in Jasmine v.2.5.x.  Stick with v.2.4.1 (as karma-jasmine does) until the following issue is resolved:
https://github.com/jasmine/jasmine/issues/1231

Unfortunately, there is no `@types/jasmine` for v.2.4 but only for v.2.5.

public/docs/_examples/package.json

@@ -46,7 +46,7 @@
     "@types/angular-route": "^1.3.2",
     "@types/angular-sanitize": "^1.3.3",
     "@types/core-js": "^0.9.34",
-    "@types/jasmine": "^2.5.35",
+    "@types/jasmine": "~2.5.36",
     "@types/node": "^6.0.45",
     "@types/selenium-webdriver": "^2.53.32",
     "angular2-template-loader": "^0.4.0",
@@ -59,8 +59,8 @@
     "html-loader": "^0.4.3",
     "html-webpack-plugin": "^2.16.1",
     "http-server": "^0.9.0",
-    "jasmine": "^2.5.2",
-    "jasmine-core": "^2.5.2",
+    "jasmine": "~2.4.1",
+    "jasmine-core": "~2.4.1",
     "karma": "^1.3.0",
     "karma-chrome-launcher": "^2.0.0",
     "karma-cli": "^1.0.1",

tools/plunker-builder/indexHtmlTranslator.js

@@ -71,6 +71,8 @@ var _rxData = [
   // Test libraries
 
   // Plunker recommends getting jasmine from cloudfare
+  // Don't upgrade to 2.5.x until following issue resolved
+  // https://github.com/jasmine/jasmine/issues/1231
   {
     pattern: 'script',
     from: 'node_modules/jasmine-core/lib/jasmine-core/jasmine.js',