* Better failure logging in failed requests

self.passing property is a much more comprehensive way of checking for passing tests
Also this uses the colors to dump to stdout

json-api/client-tests/request.py

@@ -49,8 +49,8 @@ class Request:
         
 
     def show_response(self):
-        if self.response is None:
-            print('Response := None')
+        if not self.passing:
+            print(RED + 'Fail' + NC + ' ' + self.url)
             return 
 
         real_code = self.response.status_code