Update to version 0.3.7. Credential improvement and workflow is now deprecated.

- version : 0.3.7

 [ author : guitarrapc ]

 [ Mar 17, 2014 ]

 * fix number of maxRunSpacePool. Now Concurrency is more efficient than previous release.
 * Added -quiet switch to Ping-ValentiaGroup function. You can suppress host display with this switch.
 * Added Set-ValentiaWSManMaxProcessesPerShell for Initialize-ValentiaEnvironment. Now more number of process will run.
 * Added Set-ValentiaCredential. This will store your credential in Windows Credential Manager.
 * New-ValentiaCredential is now deprecated. Valentia Credential will no longer keep your credential in SecureString File format. Please use Set-ValentiaCredential to manage your credential.
 * Test-ValentiaConnection is now deprecated. Use Ping-ValentiaGroup for test connection.
 * Invoke-ValentiaParallel is now deprecated. As Workflow is not useful in many deployemnt cases, valentia no longer support workflow.
 * As Workflow ristrection is taken away, you can use full PowerShell code. (Since Workflow blocks some cmdlet like Write-Host to use in InlineScript, but Workflow will never use in valentia.)