Update for scalaz 7.1 (days 0 to 10)

Minor updates... A couple of syntax errors, typo's and changes from scalaz 7.0 to 7.1. Will get onto the final chapters (days) soon.  ;-)
Maybe we should use docs/template.properties for the Github repository's base URL. See [template.properties](http://pamflet.databinder.net/Template+Properties.html).