refactor(sublime pkg control): move install script

- Will need this for other packages to more safely
    ensure package control is setup

core/SublimeHelpers.ps1

@@ -1,10 +1,17 @@
 # uses functions in JsonHelpers.ps1
+function Get-SublimeInstallPath
+{
+  Join-Path $Env:ProgramFiles 'Sublime Text 2'
+}
+
+function Get-SublimeSettingsPath
+{
+  Join-Path ([Environment]::GetFolderPath('ApplicationData')) 'Sublime Text 2'
+}
 
 function Get-SublimePackagesPath
 {
-  $installPath = Join-Path $Env:ProgramFiles 'Sublime Text 2'
-  $settingsPath = Join-Path ([Environment]::GetFolderPath('ApplicationData')) 'Sublime Text 2'
-  $packagesPath = Join-Path $settingsPath 'Packages'
+  $packagesPath = Join-Path (Get-SublimeSettingsPath) 'Packages'
   if (!(Test-Path $packagesPath)) { New-Item $packagesPath -Type Directory }
 
   return $packagesPath
@@ -17,6 +24,21 @@ function Get-SublimeUserPath
   return $path
 }
 
+function Install-SublimePackageControl
+{
+  # install package control
+  $packagesPath = Join-Path (Get-SublimeSettingsPath) 'Installed Packages'
+  if (!(Test-Path $packagesPath)) { New-Item $packagesPath -Type Directory }
+  $packageControl = Join-Path $packagesPath 'Package Control.sublime-package'
+
+  if (!(Test-Path $packageControl))
+  {
+    # http://wbond.net/sublime_packages/package_control/installation
+    $packageUrl = 'http://sublime.wbond.net/Package%20Control.sublime-package'
+    Get-ChocolateyWebFile -url $packageUrl -fileFullPath $packageControl
+  }
+}
+
 function Merge-PackageControlSettings
 {
   [CmdletBinding()]