only add myip if @ip4addr not nil
bump version to 0.0.8

I had another changeset merged in which became 0.0.7, so increasing the version.
Merge branch 'master' into improve_messenger_class
Merge branch 'improve_messenger_class' of github.com:theckman/tunnelbroker into improve_messenger_class
Merge pull request #12 from theckman/improve_messenger_class

only add myip if @ip4addr not nil