README is wrong about .pfx

[jeffmendoza]

To create pfx, simply download the publishsettings file for your subscription, copy the contents of Management Certificate from the publishsettings and save it in a file and name the file as your cert.pfx. This pfx will be a passwordless pfx which can be supplied as a cert parameter for Service Management Commands

This is wrong, a pfx should be binary, and it is encoded in base 64 in the publishsettings file. The openssl commands listed will not work if you follow the directions in the readme without doing a b64 decode.

The ruby sdk is incorrectly assuming the .pfx file is b64 encoded.