Fix json.net NuGet problem

build/NuSpecs/tools/install.ps1

@@ -22,6 +22,12 @@ if ($project) {
 	$umbracoFilesPath = Join-Path $rootPath "UmbracoFiles\*"
 	Copy-Item $umbracoFilesPath $projectDestinationPath -recurse -force
 	
+	# Remove Newtonsoft.Json if present in the bin folder
+	# If we don't do this, the correct version never gets copied in
+	$projectDestinationPath = Split-Path $project.FullName -Parent
+	$jsonDllFile = Join-Path $projectDestinationPath "bin\Newtonsoft.Json.dll"
+	Remove-Item $jsonDllFile -Confirm:$false
+	
 	# Open readme.txt file
 	$DTE.ItemOperations.OpenFile($toolsPath + '\Readme.txt')
 }