feat: Get-JsonJD - unrolling .'@graph' ( Fixes #2, re #9 )

Also updating tests

Author: James Brundage

Commands/Get-JsonLD.ps1

@@ -12,6 +12,10 @@ function Get-JsonLD {
     .EXAMPLE
         # Want information about an article?  Lots of news sites use this format.
         Get-JsonLD https://www.thebulwark.com/p/mahmoud-khalil-immigration-detention-first-amendment-free-speech-rights    
+    .EXAMPLE
+        # Want to get information about a schema?
+        jsonld https://schema.org/Movie
+        # Get-JSONLD will output the contents of a `@Graph` object if no `@type` is found.        
     #>
     [Alias('jsonLD','json-ld')]
     param(

JSON-LD.tests.ps1

@@ -7,8 +7,9 @@ describe 'JSON-LD' {
 
         }
         it 'can get information a schema' {
-            $result = Get-JsonLD -Url 'https://schema.org/Movie'
-            $result.'@graph' | Should -Not -BeNullOrEmpty
+            Get-JsonLD https://schema.org/Movie | 
+                Select-Object -ExpandProperty pstypenames -Unique | 
+                Should -Contain 'rdf:Property'            
         }         
     }
 }