merged branch igorw/suhosin-ubuntu (PR #159)

Commits
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3be9b0d7 [docs] add note that ubuntu includes suhosin

Discussion
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[docs] add note that ubuntu includes suhosin

(this came up on the mailing list)

doc/usage.rst

@@ -591,6 +591,11 @@ If you are on Suhosin you will also have to set this:
 
     suhosin.executor.include.whitelist = phar
 
+.. note::
+
+    Ubuntu's PHP ships with Suhosin, so if you are using Ubuntu, you will need
+    this change.
+
 Phar-Stub bug
 ~~~~~~~~~~~~~