added travis image

shabbyrobe · shabbyrobe · commit e8f02b4a0cf1 · 2014-09-23T16:50:30.000+10:00
diff --git a/README.rst b/README.rst
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 ``docopt`` creates *beautiful* command-line interfaces
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+.. image:: https://travis-ci.org/docopt/docopt.php.svg?branch=master
+
 This is a straight PHP transliteration of Vladimir Keleshev's brilliant
 `docopt <https://github.com/docopt/docopt/>`_ Python library. There are a
 few artefacts in the code as a result that may seem inefficient and
