docs(readme): fix format

README.md

@@ -29,36 +29,36 @@ Kinesumer manages the state of the distributed clients with a database, called "
 package main
 
 import (
-  "fmt"
-  "time"
-  
-  "github.com/daangn/kinesumer"
+	"fmt"
+	"time"
+
+	"github.com/daangn/kinesumer"
 )
 
 func main() {
-  client, err := kinesumer.NewKinesumer(
-    &kinesumer.Config{
-      App:              "myapp",
-      KinesisRegion:    "ap-northeast-2",
-      DynamoDBRegion:   "ap-northeast-2",
-      DynamoDBTable:    "kinesumer-state-store",
-      ScanLimit:        1500,
-      ScanTimeout:      2 * time.Second,
-  	},
-  )
-  if err != nil {
-    // Error handling.
-  }
-  
-  go func() {
-    for err := range client.Errors() {
-      // Error handling.
-    }
-  }()
-  
-  // Consume multiple streams.
-  // You can refresh the streams with `client.Refresh()` method.
-  records, err := client.Consume([]string{"stream1", "stream2"})
+	client, err := kinesumer.NewKinesumer(
+		&kinesumer.Config{
+			App:            "myapp",
+			KinesisRegion:  "ap-northeast-2",
+			DynamoDBRegion: "ap-northeast-2",
+			DynamoDBTable:  "kinesumer-state-store",
+			ScanLimit:      1500,
+			ScanTimeout:    2 * time.Second,
+		},
+	)
+	if err != nil {
+		// Error handling.
+	}
+
+	go func() {
+		for err := range client.Errors() {
+			// Error handling.
+		}
+	}()
+
+	// Consume multiple streams.
+	// You can refresh the streams with `client.Refresh()` method.
+	records, err := client.Consume([]string{"stream1", "stream2"})
 	if err != nil {
 		// Error handling.
 	}
@@ -67,7 +67,6 @@ func main() {
 		fmt.Printf("record: %v\n", record)
 	}
 }
-
 ```
 
 ## How it works