Add a simple cli interface.

src/cipher_analytical_machine/core.clj

@@ -1,7 +1,12 @@
 (ns cipher-analytical-machine.core
+  (:require
+   [cipher-analytical-machine.cli :as cli])
   (:gen-class))
 
 (defn -main
-  "I don't do a whole lot ... yet."
   [& args]
-  (println "Hello, World!"))
+  (let [{:keys [options arguments exit-message ok?]} (cli/validate-args args)]
+    (if exit-message
+      (cli/exit exit-message ok?)
+      (cli/actions options arguments))))
+