Remove references to other registration methods and update some of the wording.
Remove references to other registration methods and update some of the
wording.

Signed-off-by: Kate Stanley <59c12a62b1d23be702ac06d493bad7887a15d0c5@uk.ibm.com>
kweinmeister/sample-room-java,kweinmeister/sample-room-java,kweinmeister/sample-room-java,kweinmeister/sample-room-java