Update README to reflect the latest changes

This updates the README to reflect the switch from hosts to
servers and also removes "versioning" language and examples. This
makes the README relevant and keeps it up-to-date with the changes
to the code.
Merge pull request #138 from redding/jcr-readme

Update README to reflect the latest changes
Update to use latest of DatTCP and Sanford-Protocol

This updates Sanford to use the latest DatTCP and Sanford-Protocol.
This is part of updating Sanford to new server and process logic
and keeps it up-to-date with its dependencies.