Added petermentzer bbb-api-php contribution to labs

labs/bbb-api-php-legacy/Read Me.txt

labs/bbb-api-php-legacy/bbb_api.php

labs/bbb-api-php-legacy/bbb_api_conf.php

labs/bbb-api-php-legacy/check.php

labs/bbb-api-php-legacy/demo1.php

labs/bbb-api-php-legacy/demo2.php

labs/bbb-api-php-legacy/demo3.php

labs/bbb-api-php-legacy/demo4.js

labs/bbb-api-php-legacy/demo4.php

labs/bbb-api-php-legacy/demo4_helper.php

labs/bbb-api-php-legacy/demo5.php

labs/bbb-api-php-legacy/demo_footer.php

labs/bbb-api-php-legacy/demo_header.php

labs/bbb-api-php-legacy/heartbeat.js

labs/bbb-api-php-legacy/jquery.js

labs/bbb-api-php-legacy/jquery.xml2json.js

labs/bbb-api-php-legacy/md5.js

labs/bbb-api-php-legacy/polling.gif

labs/bbb-api-php/.gitignore

labs/bbb-api-php/README