feat(sublime packages): install package control

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

EthanBrown.SublimeText2.UtilPackages/tools/chocolateyInstall.ps1

@@ -30,6 +30,7 @@ try {
   ([IO.File]::ReadAllText($sublimeFiles)) -replace '{{term_command}}', $escapedPs |
     Out-File -FilePath (Join-Path $sublimeUserDataPath $sublimeFilesFileName) -Force -Encoding ASCII
 
+  Install-SublimePackageControl
   $packageControl = (Join-Path (Get-CurrentDirectory) 'Package Control.sublime-settings')
   Merge-PackageControlSettings -FilePath $packageControl