feat: PSJekyll.Site Formatting ( Fixes #47 )

Author: James Brundage

Types/PSJekyll.Site/PSJekyll.Site.format.ps1

@@ -0,0 +1,4 @@
+Write-FormatView -TypeName PSJekyll.Site -Property SiteName, 'Page.Count', 'Post.Count' -VirtualProperty @{
+    'Page.Count' = { $_.Page.Count }
+    'Post.Count' = { $_.Post.Count }
+}