Updated and repaired so that the commands in it actually work.
1. Original instructions called for the user to set their workspace to "tutorial", which was world-writeable.
That workspace still exists, but is no longer world-writeable, so I changed the instructions to have the
user work in their home workspace.
2. Changed kbws-* to ws-*
3. Changed kbfb-* to fb-*
4. Changed "genome id" to GENOME_ID to make it clearer that the user is supposed to fill in the ID of the
genome, rather than literally typing that string
genome, rather than literally typing that string (and also added a note to that effect).
5. Various other changes to improve readability. I probably spent more time on this than I should have.