Bump version to 2.1.1 (dns library change)

Shorter git revision

build

@@ -1,6 +1,6 @@
 #!/bin/sh
 #go get -v
-REVISION=`git rev-parse --short=6  HEAD`
+REVISION=`git rev-parse --short=5  HEAD`
 echo $REVISION > REVISION
 go build -ldflags "-X main.gitVersion $REVISION" -v
 go install

geodns.go

@@ -11,7 +11,7 @@ import (
 	"time"
 )
 
-var VERSION string = "2.1.0"
+var VERSION string = "2.1.1"
 var gitVersion string
 var serverId string