diff --git a/vendor/github.com/bsm/sarama-cluster/config.go b/vendor/github.com/bsm/sarama-cluster/config.go
new file mode 100644
index 0000000..084b835
--- /dev/null
+++ b/vendor/github.com/bsm/sarama-cluster/config.go
@@ -0,0 +1,146 @@
+package cluster
+
+import (
+	"regexp"
+	"time"
+
+	"github.com/Shopify/sarama"
+)
+
+var minVersion = sarama.V0_9_0_0
+
+type ConsumerMode uint8
+
+const (
+	ConsumerModeMultiplex ConsumerMode = iota
+	ConsumerModePartitions
+)
+
+// Config extends sarama.Config with Group specific namespace
+type Config struct {
+	sarama.Config
+
+	// Group is the namespace for group management properties
+	Group struct {
+
+		// The strategy to use for the allocation of partitions to consumers (defaults to StrategyRange)
+		PartitionStrategy Strategy
+
+		// By default, messages and errors from the subscribed topics and partitions are all multiplexed and
+		// made available through the consumer's Messages() and Errors() channels.
+		//
+		// Users who require low-level access can enable ConsumerModePartitions where individual partitions
+		// are exposed on the Partitions() channel. Messages and errors must then be consumed on the partitions
+		// themselves.
+		Mode ConsumerMode
+
+		Offsets struct {
+			Retry struct {
+				// The numer retries when committing offsets (defaults to 3).
+				Max int
+			}
+			Synchronization struct {
+				// The duration allowed for other clients to commit their offsets before resumption in this client, e.g. during a rebalance
+				// NewConfig sets this to the Consumer.MaxProcessingTime duration of the Sarama configuration
+				DwellTime time.Duration
+			}
+		}
+
+		Session struct {
+			// The allowed session timeout for registered consumers (defaults to 30s).
+			// Must be within the allowed server range.
+			Timeout time.Duration
+		}
+
+		Heartbeat struct {
+			// Interval between each heartbeat (defaults to 3s). It should be no more
+			// than 1/3rd of the Group.Session.Timout setting
+			Interval time.Duration
+		}
+
+		// Return specifies which group channels will be populated. If they are set to true,
+		// you must read from the respective channels to prevent deadlock.
+		Return struct {
+			// If enabled, rebalance notification will be returned on the
+			// Notifications channel (default disabled).
+			Notifications bool
+		}
+
+		Topics struct {
+			// An additional whitelist of topics to subscribe to.
+			Whitelist *regexp.Regexp
+			// An additional blacklist of topics to avoid. If set, this will precede over
+			// the Whitelist setting.
+			Blacklist *regexp.Regexp
+		}
+
+		Member struct {
+			// Custom metadata to include when joining the group. The user data for all joined members
+			// can be retrieved by sending a DescribeGroupRequest to the broker that is the
+			// coordinator for the group.
+			UserData []byte
+		}
+	}
+}
+
+// NewConfig returns a new configuration instance with sane defaults.
+func NewConfig() *Config {
+	c := &Config{
+		Config: *sarama.NewConfig(),
+	}
+	c.Group.PartitionStrategy = StrategyRange
+	c.Group.Offsets.Retry.Max = 3
+	c.Group.Offsets.Synchronization.DwellTime = c.Consumer.MaxProcessingTime
+	c.Group.Session.Timeout = 30 * time.Second
+	c.Group.Heartbeat.Interval = 3 * time.Second
+	c.Config.Version = minVersion
+	return c
+}
+
+// Validate checks a Config instance. It will return a
+// sarama.ConfigurationError if the specified values don't make sense.
+func (c *Config) Validate() error {
+	if c.Group.Heartbeat.Interval%time.Millisecond != 0 {
+		sarama.Logger.Println("Group.Heartbeat.Interval only supports millisecond precision; nanoseconds will be truncated.")
+	}
+	if c.Group.Session.Timeout%time.Millisecond != 0 {
+		sarama.Logger.Println("Group.Session.Timeout only supports millisecond precision; nanoseconds will be truncated.")
+	}
+	if c.Group.PartitionStrategy != StrategyRange && c.Group.PartitionStrategy != StrategyRoundRobin {
+		sarama.Logger.Println("Group.PartitionStrategy is not supported; range will be assumed.")
+	}
+	if !c.Version.IsAtLeast(minVersion) {
+		sarama.Logger.Println("Version is not supported; 0.9. will be assumed.")
+		c.Version = minVersion
+	}
+	if err := c.Config.Validate(); err != nil {
+		return err
+	}
+
+	// validate the Group values
+	switch {
+	case c.Group.Offsets.Retry.Max < 0:
+		return sarama.ConfigurationError("Group.Offsets.Retry.Max must be >= 0")
+	case c.Group.Offsets.Synchronization.DwellTime <= 0:
+		return sarama.ConfigurationError("Group.Offsets.Synchronization.DwellTime must be > 0")
+	case c.Group.Offsets.Synchronization.DwellTime > 10*time.Minute:
+		return sarama.ConfigurationError("Group.Offsets.Synchronization.DwellTime must be <= 10m")
+	case c.Group.Heartbeat.Interval <= 0:
+		return sarama.ConfigurationError("Group.Heartbeat.Interval must be > 0")
+	case c.Group.Session.Timeout <= 0:
+		return sarama.ConfigurationError("Group.Session.Timeout must be > 0")
+	case !c.Metadata.Full && c.Group.Topics.Whitelist != nil:
+		return sarama.ConfigurationError("Metadata.Full must be enabled when Group.Topics.Whitelist is used")
+	case !c.Metadata.Full && c.Group.Topics.Blacklist != nil:
+		return sarama.ConfigurationError("Metadata.Full must be enabled when Group.Topics.Blacklist is used")
+	}
+
+	// ensure offset is correct
+	switch c.Consumer.Offsets.Initial {
+	case sarama.OffsetOldest, sarama.OffsetNewest:
+	default:
+		return sarama.ConfigurationError("Consumer.Offsets.Initial must be either OffsetOldest or OffsetNewest")
+	}
+
+	return nil
+}