added docs for .travis.yml and added a second browser for selenium basic test.
Reorganized the browserstack tests and added internet expolrer to the tests
added a wait time after typing.
added different browsers.
fixed some minor issues with the parallelism of the webdriver.
deleted a unused line
Merge pull request #1107 from geoadmin/browserstack_doc_and_more_browsers

Browserstack doc and more browsers