Add logging when SSL verification fails, and discard the download

TODO: determine if we should make more noise

add import ssl...

It turns out that a self-signed cert will work just fine if it is
in the ca_certs file.

TODO: find some way of verifying this is the right cert :-)

Place the opener registration call somewhere after the class definition.

The blog post at:
http://thejosephturner.com/blog/2011/03/19/\
https-certificate-verification-in-python-with-urllib2/

describes how to do HTTPS certificate verification with urllib2

Note: it seems that the self-signed cert used does not have a CA; we
will need to resolve this.

Use --help to view usage.

Using --help gives the list of
options required for SoaT.

Make sure the commandline arguments are correct
before proceding. If not, show error message and
correct usage.