Add example for failover client.

.travis.yml

@@ -15,3 +15,6 @@ install:
   - go get gopkg.in/check.v1
   - mkdir -p $HOME/gopath/src/gopkg.in
   - ln -s `pwd` $HOME/gopath/src/gopkg.in/redis.v2
+
+before_script:
+  - redis-server testdata/sentinel.conf --sentinel &

README.md

@@ -11,16 +11,17 @@ Supports:
 - TLS connections.
 - Thread safety.
 - Timeouts.
+- Redis Sentinel.
 
-API docs: http://godoc.org/gopkg.in/redis.v1.
+API docs: http://godoc.org/gopkg.in/redis.v2.
-Examples: http://godoc.org/gopkg.in/redis.v1#pkg-examples.
+Examples: http://godoc.org/gopkg.in/redis.v2#pkg-examples.
 
 Installation
 ------------
 
 Install:
 
-    go get gopkg.in/redis.v1
+    go get gopkg.in/redis.v2
 
 Look and feel
 -------------

example_test.go

@@ -22,7 +22,17 @@ func ExampleNewTCPClient() {
 		Password: "", // no password set
 		DB:       0,  // use default DB
 	})
-	defer client.Close()
+
+	pong, err := client.Ping().Result()
+	fmt.Println(pong, err)
+	// Output: PONG <nil>
+}
+
+func ExampleNewFailoverClient() {
+	client := redis.NewFailoverClient(&redis.FailoverOptions{
+		MasterName:    "master",
+		SentinelAddrs: []string{":26379"},
+	})
 
 	pong, err := client.Ping().Result()
 	fmt.Println(pong, err)

sentinel_test.go

@@ -86,7 +86,7 @@ func TestSentinel(t *testing.T) {
 	masterName := "mymaster"
 	masterPort := "8123"
 	slavePort := "8124"
-	sentinelPort := "26379"
+	sentinelPort := "8125"
 
 	_, err := startRedis(masterPort)
 	if err != nil {

testdata/sentinel.conf

@@ -0,0 +1,6 @@
+port 26379
+
+sentinel monitor master 127.0.0.1 6379 1
+sentinel down-after-milliseconds master 2000
+sentinel failover-timeout master 5000
+sentinel parallel-syncs master 4