feat: OpenGraph.get_HTML ( Fixes #8 )

Adding Author and IconURI to OpenGraph module output

Author: James Brundage

Types/OpenGraph/get_HTML.ps1

@@ -2,9 +2,12 @@
     if ($this.Description) {
         "<meta name='description' content='$([Web.HttpUtility]::HtmlAttributeEncode($this.Description))' />"
     }
-    if ($this.PrivateData.PSData.IconUri) {
-
+    if ($this.Author) {
+        "<meta name='article:author' content='$([Web.HttpUtility]::HtmlAttributeEncode($this.Author))' />"
     }
+    if ($this.PrivateData.PSData.IconUri) {
+        "<meta property='og:image' content='$([Web.HttpUtility]::HtmlAttributeEncode($this.PrivateData.PSData.IconUri))' />"
+    }    
 } else {
     foreach ($property in $this.PSObject.Properties) {
         if ($property.Name -match ':') {