- moved and renambed constants from LocatorStrategy to WebDriver
- removed class LocatorStrategy, not needed anymore
- modified examples in README.md
- moved and renamed constants from WebDriverResponseStatus to WebDriverException and propagated changes
- removed class WebDriverResponseStatus
- removed class NoSuchElementException, not needed and propagated changes
- moved constant SUCESS from WebDriverException to WebDriverBase
- removed method handleError
- defined static property WebDriverExcption::$messages that contains all error messages based on code
- added use of WebDriverExcption::$messages in handleResponse method
- huge code cleanup in WebDriver class