(chocolateyGH-592) No Warning on Url Shortcut

Do not warn about target existence if shortcut target is a url.

src/chocolatey.resources/helpers/functions/Install-ChocolateyShortcut.ps1

@@ -51,7 +51,7 @@ Install-ChocolateyShortcut -shortcutFilePath "C:\notepad.lnk" -targetPath "C:\Wi
 
 This will create a new shortcut at the location of "C:\notepad.lnk" and link to the
 Notepad application.  In addition, other properties are being set to specify the working 
-directoy, an icon to be used for the shortcut, along with a description and arguments.
+directory, an icon to be used for the shortcut, along with a description and arguments.
 
 #>
 	param(
@@ -65,6 +65,12 @@ directoy, an icon to be used for the shortcut, along with a description and argu
 
 	Write-Debug "Running 'Install-ChocolateyShortcut' with parameters ShortcutFilePath: `'$shortcutFilePath`', TargetPath: `'$targetPath`', WorkingDirectory: `'$workingDirectory`', Arguments: `'$arguments`', IconLocation: `'$iconLocation`', Description: `'$description`'";
 
+	# http://powershell.com/cs/blogs/tips/archive/2009/02/05/validating-a-url.aspx
+	function isURIWeb($address) { 
+	  $uri = $address -as [System.URI] 
+	  $uri.AbsoluteURI -ne $null -and $uri.Scheme -match '[http|https]' 
+	} 
+
 	if(!$shortcutFilePath) {
 	  throw "Install-ChocolateyShortcut - `$shortcutFilePath can not be null."
 	}
@@ -78,7 +84,7 @@ directoy, an icon to be used for the shortcut, along with a description and argu
 	  throw "Install-ChocolateyShortcut - `$targetPath can not be null."
 	}
 
-	if(!(Test-Path($targetPath))) {
+	if(!(Test-Path($targetPath)) -and !(IsURIWeb($targetPath))) {
 	  Write-Warning "'$targetPath' does not exist. If it is not created the shortcut will not be valid."
 	}
 
@@ -116,4 +122,5 @@ directoy, an icon to be used for the shortcut, along with a description and argu
 	catch {
 		Write-Warning "Unable to create shortcut. Error captured was $($_.Exception.Message)."
 	}
-}
+}
+