-Third-party libraries are stored here. Currently, Shapely is the only
-one we're using which isn't available through package managers.
+Third-party libraries are stored here. Currently, we use Shapely,
+lp_solve (along with its Python bindings), and env-js. To install
+them, simply run 'make' within this directory. You can also run 'make
+lib' in the top-level directory.