Updated code block to fix syntax

README.rst

@@ -76,7 +76,7 @@ Testing
 You can make use of tox_ >= 1.8 to test the entire matrix of options ``(with /
 without lxml) * (pygeoif vs shapely) * (py26,py27,py32,py33,py34)`` as well as
 pep8 style checking in a single call (this approximates what happens when the
-package is run through Travis-CI):
+package is run through Travis-CI)::
 
     # Install tox
     pip install tox>=1.8