Update flag descriptions and README.

README.md

@@ -24,15 +24,17 @@ A custom comma-separated list of upstream servers can be specified with the `-s`
 
 ```console
   -a address:port
-        the address:port to listen on. In order to listen on the loopback interface only, use `127.0.0.1:53`. To listen on any interface, use `:53` (default ":53")
+    	address:port to listen on. In order to listen on the loopback interface only, use `127.0.0.1:53`. To listen on any interface, use `:53` (default ":53")
   -em
-        collect metrics on evictions
+    	collect metrics on evictions
   -l string
-        log file path
+    	log file path
+  -minTTL minTTL
+    	minimum TTL in seconds to send to clients. If the TTL provided upstream is smaller, minTTL is used. (default 60)
   -pprof int
-        The port to use for pprof debugging. If set to 0 (default) pprof will not be started.
+    	port to use for pprof debugging. If set to 0 (default) pprof will not be started.
   -s string
-        comma-separated list of upstream servers (default "one.one.one.one:[email protected],dns.google:[email protected]")
+    	comma-separated list of upstream servers (default "one.one.one.one:[email protected],dns.google:[email protected]")
 ```
 
 ## Credits

main.go

@@ -28,10 +28,10 @@ const (
 var (
 	upstreamServers = flag.String("s", "one.one.one.one:[email protected],dns.google:[email protected]", "comma-separated list of upstream servers")
 	logPath         = flag.String("l", "", "log file path")
-	minTTL          = flag.Int("minTTL", 60, "Minimum TTL to send to clients. If the TTL provided upstream is smaller, `minTTL` is used.")
+	minTTL          = flag.Int("minTTL", 60, "minimum TTL in seconds to send to clients. If the TTL provided upstream is smaller, `minTTL` is used.")
 	evictMetrics    = flag.Bool("em", false, "collect metrics on evictions")
-	addr            = flag.String("a", ":53", "the `address:port` to listen on. In order to listen on the loopback interface only, use `127.0.0.1:53`. To listen on any interface, use `:53`")
-	ppr             = flag.Int("pprof", 0, "The port to use for pprof debugging. If set to 0 (default) pprof will not be started.")
+	addr            = flag.String("a", ":53", "`address:port` to listen on. In order to listen on the loopback interface only, use `127.0.0.1:53`. To listen on any interface, use `:53`")
+	ppr             = flag.Int("pprof", 0, "port to use for pprof debugging. If set to 0 (default) pprof will not be started.")
 )
 
 func main() {