* Moved post_installer.py into the examples/howto/ directory.
* Added instructions for its use to the Python Bindings HOWTO.
* Ran it as intended from the lang/python/ directory in order to both
prove it works and quickly and easily get the updated howto
replicated. Also to fix all those .texi files.
Tested-by: Ben McGinnes <ben@adversary.org>
Signed-off-by: Ben McGinnes <ben@adversary.org>
