Update Get-GPPPassword.ps1

Bug fix of variables.
Update Get-GPPPassword.ps1
Update Get-GPPPassword.ps1

Iterate version.
Changed the direction of XML parsing

Used Select-XML to ensure compatibility with v2
Update Get-GPPPassword.ps1
Update Get-GPPPassword.ps1
Merge pull request #32 from obscuresec/master

Minor fixes for compatibility between versions