add linkback

README.md

@@ -1,4 +1,4 @@
-# Watchdog
+# [Watchdog](https://git.rootprojects.org/root/watchdog.go)
 
 > Get notified when sites go down.
 
@@ -198,7 +198,7 @@ The examples below are shown with Twilio and Mailgun, as taken from their `curl`
 				"password": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
 			},
 			"headers": {
-        "User-Agent": "Watchdog/1.0",
+				"User-Agent": "Watchdog/1.0"
 			},
 			"form": {
 				"from": "Watchdog <watchdog@my.example.com>",
@@ -216,7 +216,7 @@ The examples below are shown with Twilio and Mailgun, as taken from their `curl`
 				"password": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
 			},
 			"headers": {
-        "User-Agent": "Watchdog/1.0",
+				"User-Agent": "Watchdog/1.0"
 			},
 			"form": {
 				"To": "+1 801 555 1234",