feat: GetSchemaTypes.gql Example ( Fixes #27 )

Author: James Brundage

Examples/GetSchemaTypes.gql

@@ -0,0 +1,16 @@
+query {
+  __schema {
+    types {
+      name
+      kind
+      description
+      fields {
+        name
+        type {
+            name            
+        }
+        description
+      }            
+    }
+  }
+}