Add windows compatiable tests

Author: ThomasHickman

tests/wf/js_output.cwl

@@ -2,7 +2,9 @@ class: CommandLineTool
 cwlVersion: v1.0
 requirements:
   - class: InlineJavascriptRequirement
+  - class: ShellCommandRequirement
 inputs: []
 outputs: []
 arguments:
-  - valueFrom: ${console.log("Log message");console.error("Error message");return "true";}
+  - valueFrom: ${console.log("Log message");console.error("Error message");return "(exit 0)"}
+    shellQuote: false

tests/wf/js_output_workflow.cwl

@@ -12,4 +12,4 @@ steps:
       class: ExpressionTool
       inputs: []
       outputs: []
-      expression: ${console.log("Log message");console.error("Error message");return "true";}
+      expression: ${console.log("Log message");console.error("Error message");return "(exit 0)";}