1. adding statistics reporting

2. refactor version to util package

go/stats/disk_windows.go

@@ -0,0 +1,17 @@
+// +build windows
+
+package stats
+
+import (
+	"syscall"
+)
+
+type DiskStatus struct {
+	All  uint64 `json:"all"`
+	Used uint64 `json:"used"`
+	Free uint64 `json:"free"`
+}
+
+func DiskUsage(path string) (disk *DiskStatus) {
+	return
+}