Update README

README.md

@@ -1 +1,18 @@
-# example-dojo
+# Example Dojo
+
+This repositories features an example dojo.
+
+It contains two modules, `hello` and `world`.
+
+The module `hello` features challenges `apple` and `banana`.
+
+The module `world` features challenges `earth`, `mars`, and `venus`.
+
+Each challenge demonstrates different challenge definition capabilities, in an increasing order of feature complexity.
+
+See each challenge's README for further information:
+- [apple](./hello/apple)
+- [banana](./hello/banana)
+- [earth](./world/earth)
+- [mars](./world/mars)
+- [venus](./world/venus)