Script that dumps all the sphinx objects from the inventory URL

I prepared a script that dumps all the sphinx objects from an inventory using the sphinx API. I don't know if this is the most proper place to have this, but follow the MR for analysis.

Thanks

nightlies/intersphinx_dump.py

+#!/usr/bin/env python
+# @author: Tiago de Freitas Pereira <tiago.pereira@idiap.ch>
+
+"""
+Dump all the sphinx objects given an inventory URL.
+
+This script is useful when you are struggling to do proper links with other projects such as:
+
+  - Matplotlib: http://matplotlib.org/objects.inv
+  - Python: https://docs.python.org/2.7/objects.inv
+  - Numpy: https://docs.scipy.org/doc/numpy-1.12.0/objects.inv
+
+Usage:
+  interphinx_dump.py <url>
+  interphinx_dump.py -h | --help
+
+Options:
+  -h --help                     Show this screen.
+"""
+
+from sphinx.ext import intersphinx
+from docopt import docopt
+import warnings
+
+
+def main():
+
+    args = docopt(__doc__)
+
+    intersphinx.debug(['', args["<url>"]])
+
+
+if __name__=="__main__":
+    main()