Unable to find google api library, see droogle README for instructions.

Using the latest 7 release as instructions in README.txt returns the following error:

Fatal error: require_once(): Failed opening required 'Google/Client.php' (include_path='.:/usr/share/php:/usr/share/pear:/srv/<domain>/public/htdocs//sites/all/libraries/google-api-php-client-git-version/src') in /srv/<domain>/public/htdocs/sites/all/modules/droogle/droogle.module on line 243