Add stub for storagemgr program

sevenkeys/Makefile

@@ -2,6 +2,8 @@ createdb:
 	mysql --user=root --password=$(shell pass show sevenkeys/mysql) <sql/createdb.sql
 import: createdb
 	go run cmd/importer/main.go
+storagemgr:
+	go run cmd/storagemgr/main.go
 
 clean:
 	mysql --user=root --password=$(shell pass show sevenkeys/mysql) <sql/removedb.sql

sevenkeys/cmd/storagemgr/main.go

@@ -0,0 +1,7 @@
+package main
+
+import "fmt"
+
+func main() {
+	fmt.Println("storage manager")
+}