Parse input array types properly

Closes #23

Author: Mark Robinson

src/main/java/org/commonwl/viewer/domain/CWLCollection.java

@@ -320,6 +320,12 @@ private String extractTypes(JsonNode typeNode) {
 
                 // Set the type to the constructed string
                 return typeDetails.toString();
+
+            } else if (typeNode.getClass() == ObjectNode.class) {
+                // Type: array and items:
+                if (typeNode.has("items")) {
+                    return typeNode.get("items").asText() + "[]";
+                }
             }
         }
         return null;