README.md in trackler-2.2.1.104

- old
+ new

@@ -17,5 +17,32 @@
 And if you ask for a 6-digit series from a 5-digit string, you deserve
 whatever you get.
 
 Note that these series are only required to occupy *adjacent positions*
 in the input; the digits need not be *numerically consecutive*.
+
+
+## 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:
+
+        % ./phpunit.phar series/series_test.php
+
+[PHPUnit]: http://phpunit.de
+
+
+## Source
+
+A subset of the Problem 8 at Project Euler [http://projecteuler.net/problem=8](http://projecteuler.net/problem=8)
+
+## Submitting Incomplete Solutions
+It's possible to submit an incomplete solution so you can see how others have completed the exercise.