update gendb.sh to generate spell data with spells.py

gendb.sh

@@ -28,5 +28,15 @@ sqlite3 pf2.db < data/feats.sql
 sqlite3 pf2.db < data/ancestries.sql
 sqlite3 pf2.db < data/armor.sql
 sqlite3 pf2.db < data/heritages.sql
+# Comment out the following three lines if you don't want to generate the spell data.
+cd data/third_party_json
+python3 spells.py
+cd ../..
+
+# TODO Eventually we will stop relying on the spells.py script and I will have
+# the actual .sql files for the spell data; I am waiting to see if the
+# third-party source improves the data in the next few weeks. If not, we'll
+# "divorce" from that data, dump to .sql, and manually manipulate going
+# forward.