add service updatetime README.md

services/updatetime/README.md

@@ -0,0 +1,22 @@
+# updatetime
+update system time by http
+## start
+```bash
+bash init.sh
+```
+## build
+```bash
+make build
+```
+## pack
+```bash
+make release
+```
+## install
+```bash
+make install
+```
+or
+```bash
+bash release/updatetime/install.sh
+```