Rescue OpenSSL::SSL::SSLErrorWaitReadable

This is yet another error that YouTube servers raise once in a while
and then can be solved by trying the same request again after a while.

Specifically this occurred once at https://www.honeybadger.io/projects/38575/faults/7853758
Merge pull request #95 from claudiofullscreen/rescue-ssl-error-wait-readable

Rescue OpenSSL::SSL::SSLErrorWaitReadable