Comment 5 for bug 1702701

How do you add the new path? I get the following Terminal output:

```
$ gsettings set com.canonical.unity-greeter /usr/share/backgrounds/warty-final-ubuntu.png
Usage:
  gsettings [--schemadir SCHEMADIR] set SCHEMA[:PATH] KEY VALUE

Set the value of KEY to VALUE

Arguments:
  SCHEMADIR A directory to search for additional schemas
  SCHEMA The name of the schema
  PATH The path, for relocatable schemas
  KEY The key within the schema
  VALUE The value to set
```

This seems to be erroring out (setting the value to false didn't produce this output)