make rst2ipynb.py executable

rst2ipynb.py

@@ -1,21 +1,22 b''
+#!/usr/bin/env python
 """
 A minimal front end to the Docutils Publisher, producing an ipython notebook.
 """
 
 import docutils.readers.standalone
 import docutils.parsers.rst
 import docutils.core
 import docutils.io
 import rst2ipynblib
 from docutils.core import publish_cmdline
 
 description = ('Generates an ipython notebooks from standalone '
                'reStructuredText sources. ' +
                docutils.core.default_description)
 
 publish_cmdline(reader=docutils.readers.standalone.Reader(),
                           parser=docutils.parsers.rst.Parser(),
                           writer=rst2ipynblib.Writer(),
                           enable_exit_status=1,
                           usage=docutils.core.default_usage,
                           description=description)