Why doesn't my NiFi Nar show up in the processor list?

Just made my first NAR from a tutorial, put it in the /lib file and restarted NiFi. The Processor shows up as loaded in the logs but does not show up in the processor list. Any ideas?

Tutorial: http://www.nifi.rocks/developing-a-custom-apache-nifi-processor-json/

        @SideEffectFree
        @Tags({"JSON", "NIFI ROCKS"})
        @CapabilityDescription("Fetch value from json path.")
        public class JsonProcessor extends AbstractProcessor {
           ...
        }

Edit: I see two lines in the logs with this in it:

2017-07-06 19:34:06,200 INFO [main] org.apache.nifi.nar.NarClassLoaders Loaded NAR file: C:\UserApps\NIFI-1~1.0\.\work\nar\extensions\examples-1.0-SNAPSHOT.nar-unpacked as class loader org.apache.nifi.nar.NarClassLoader[.\work\nar\extensions\examples-1.0-SNAPSHOT.nar-unpacked]

What should the processor be called in the list? JsonProcessor?

Edit:

Tried changing the <nifi.version>1.3.0</nifi.version> in the pom from 1.2.0 to 1.3.0. No joy.