Simplify error logging in example

README.md

@@ -34,25 +34,25 @@ import (
 func main() {
 	db, err := sql.Open("gocql", "localhost:9042 keyspace=system")
 	if err != nil {
-		fmt.Println("Open error: %s\n", err)
+		fmt.Println("Open error:", err)
 	}
 
 	rows, err := db.Query("SELECT keyspace_name FROM schema_keyspaces")
 	if err != nil {
-		fmt.Printf("Query error: %s\n", err)
+		fmt.Println("Query error:", err)
 	}
 
 	for rows.Next() {
 		var keyspace string
 		err = rows.Scan(&keyspace)
 		if err != nil {
-			fmt.Printf("Scan error: %s\n", err)
+			fmt.Println("Scan error:", err)
 		}
 		fmt.Println(keyspace)
 	}
 
 	if err = rows.Err(); err != nil {
-		fmt.Printf("Iteration error: %s\n", err)
+		fmt.Println("Iteration error:", err)
 		return
 	}
 }