Added test nbs to setup and removed todo

IPython/nbformat/convert.py

@@ -60,7 +60,7 b' def convert(nb, to_version):'
             convert_function = versions[version].downgrade
 
         # Convert and make sure version changed during conversion.
-        converted = convert_function(nb) #todo
+        converted = convert_function(nb)
         if converted.get('nbformat', 1) == version:
             raise Exception("Cannot convert notebook from v%d to v%d.  Operation" \
                 "failed silently." % (major, step_version))

setupbase.py

@@ -154,7 +154,8 b' def find_package_data():'
         'IPython.nbconvert' : ['templates/*.tpl', 'templates/latex/*.tplx',
             'templates/latex/skeleton/*.tplx', 'templates/skeleton/*', 
             'templates/reveal_internals/*.tpl', 'tests/files/*.*',
-            'exporters/tests/files/*.*']
+            'exporters/tests/files/*.*'],
+        'IPython.nbformat' : ['tests/*.ipynb']
     }
     return package_data