Add todo

README.md

@@ -24,3 +24,12 @@ bin/rails server
 ```
 bin/rspec
 ```
+
+## TODO
+
+- What additional cols to add to parks model?
+- Order results on parks#index
+- index states for efficient search?
+  - full text search in sqlite?
+  - normalize state on a separate table?
+  - With postgres I would use a states:array col and gin index