Update README.md

A sample code is changed into the same as in a web browser.
Setup basic test environment. bugid:110332

* Setup testing framework "jasmine"
* Setup grunt-tasks for test
  * test
  * ci
  * test-node
  * test-headless-browser
  * test-browser
  * test-browser-coverage
* Setup config file for Travis CI
Implement the "loadPluginEndpoints" option. bugid:110259
Should not try to get token for api.authenticate even if accessToken is empty. bugid: 110334
Implement the "suppressResponseCodes" option. bugid:110261