Added verbose names to tests in gigasecond_test.php (#103)
Added verbose names to tests in gigasecond_test.php (#103)

* added more verbose test names and add a comment that explains the intention of the your_birthday test

* converted test names to camelCase, per style guide

camilopayan/xphp,exercism/xphp,exercism/xphp,camilopayan/xphp