Initial commit with command and Day interface

one/main.go

@@ -0,0 +1,16 @@
+package one
+
+type One struct {
+}
+
+func Init(filepath string) *One {
+	return nil
+}
+
+func (d *One) Answer() string {
+	return "Hello"
+}
+
+func (d *One) FollowUp() string {
+	return "World!"
+}