implmented fetch on cache miss

config.go

@@ -0,0 +1,13 @@
+package main
+
+type Config struct {
+	RepoPath  string
+	MirrorURL string
+}
+
+func NewConfig() *Config {
+	return &Config{
+		RepoPath:  "/home/ewpt3ch/dev/pacman-cache-server/tmprepo",
+		MirrorURL: "https://us.mirrors.cicku.me/archlinux/",
+	}
+}