print postcode redirect if run under CLI for testing

The test framework runs under CLI which means the headers aren't
printed so we can't test redirects. To get round this check if we are
running under the CLI and then print out the header.

www/docs/postcode/index.php

@@ -187,7 +187,14 @@ function member_redirect(&$MEMBER, $options = array()) {
         } else {
             $url = $MEMBER->url();
         }
-        header("Location: $url");
+        // awfulness so we can test this works becuase we use the CLI
+        // in our test framework for page requests and the CLI doesn't
+        // print out headers
+        if (php_sapi_name() === 'cli') {
+            print("Location: $url");
+        } else {
+            header("Location: $url");
+        }
         exit;
     }
 }