Connect to Readability without SSL

Readability did something strange to their SSL certs recently (I assume
it was part of a Heartbleed upgrade).  Connecting to their https server
on some systems gives ssl_error(ssl_verify) exception.  Changes to
cacert_file option or cert_verify_hook don't seem to help.

This is intended to be a temporary change until the issue can be
permanently and securely resolved.
Release v0.0.4