Updated Composer packages.

Updated readme.md with Google API info.

Updated readme.md.

Updated readme.md.

Adding and refactoring unit tests.

Updated readme.md

Renamed SafeUrls facade to SafeUrlsFacade, re-ran unit tests and test…

…ed facade.

Refactored code in src/SafeUrls.php, re-ran unit tests.

Refactored SafeUrls class, re-ran unit and code coverage tests.

Refactored run_phpunit, .scrutinizer.yml, re-ran unit tests.