Create species, cleanup schema.

- create species
- species genus_id not null

router/api.go

@@ -18,6 +18,7 @@ func API() *mux.Router {
 	m.Path("/genera/{Id:.+}").Methods("DELETE").Name(DeleteGenus)
 
 	// Species
+	m.Path("/species").Methods("POST").Name(CreateSpecies)
 	m.Path("/species/{Id:.+}").Methods("GET").Name(Species)
 
 	return m

router/routes.go

@@ -11,5 +11,6 @@ const (
 	UpdateGenus = "genus:update"
 	DeleteGenus = "genus:delete"
 
-	Species = "species"
+	Species       = "species"
+	CreateSpecies = "species:create"
 )