feat(sublime packages): install package control

- With refactored package control script, always
    call to double-check package control exists

EthanBrown.SublimeText2.WebPackages/tools/chocolateyInstall.ps1

@@ -49,6 +49,7 @@ try {
   ([IO.File]::ReadAllText($grunt)) -replace '{{node_path}}', $escapedNodeRoot |
     Out-File -FilePath (Join-Path $sublimeUserDataPath $gruntFileName) -Force -Encoding ASCII
 
+  Install-SublimePackageControl
   $packageControl = (Join-Path $current 'Package Control.sublime-settings')
   Merge-PackageControlSettings -FilePath $packageControl