Fix check for current directory

[ellnix]

Fix #377

This was the smallest change I could make to fix the issue. It might be better if instead of comparing to "." we set change getInstallationDirectory() from

        return $name !== '.' ? getcwd().'/'.$name : '.';

to

        return $name !== '.' ? getcwd().'/'.$name : getcwd();

Any feedback would be appreciated.

[taylorotwell]

No plans to mess with this right now.