Added capability to choose specific type of locator to improve performance

Signed-off-by: Daniel Koo <danieljamin.koo@gmail.com>
Removed 3 second sleep in getNewSessionDo as Selenium 2.41+ fixed the existing issue

Signed-off-by: Daniel Koo <danieljamin.koo@gmail.com>
Modified to add performance improvements by storing WebDriver WebElement and By locators

Signed-off-by: Daniel Koo <danieljamin.koo@gmail.com>