README.md in trackler-2.2.1.104

- old
+ new

@@ -8,19 +8,25 @@
 
 input: [1,[2,3,null,4],[null],5]
 
 output: [1,2,3,4,5]
 
-## Making the Test Suite Pass
 
-1. Get [PHPUnit].
+## Running the tests
 
+1. Go to the root of your PHP exercise directory, which is `<EXERCISM_WORKSPACE>/php`.
+   To find the Exercism workspace run
+
+        % exercism debug | grep Workspace
+
+1. Get [PHPUnit] if you don't have it already.
+
         % wget --no-check-certificate https://phar.phpunit.de/phpunit.phar
         % chmod +x phpunit.phar
 
-2. Execute the tests for an assignment.
+2. Execute the tests:
 
-        % phpunit.phar wordy/wordy_test.php
+        % ./phpunit.phar flatten-array/flatten-array_test.php
 
 [PHPUnit]: http://phpunit.de
 
 
 ## Source