Broken Composer Example URL

[schaferyan]

The URL in the Composer Example section of the readme appears to be broken.

The URL after navigating into the example_composer file is https://github.com/serpapi/google-search-results-php/tree/master/example_composer. The current URL listed is https://github.com/serpapi/google-search-results-php/example_composer/ which leads to a 404 not found.