Fix tool installation instructions in READMEs

tools/README.md

@@ -6,3 +6,5 @@ Some of these tools mirror tools that ship with Kafka, but these tools won't req
 - [kafka-console-producer](./kafka-console-producer): a command line tool to produce a single message to your Kafka custer.
 - [kafka-console-partitionconsumer](./kafka-console-partitionconsumer): a command line tool to consume a single partition of a topic on your Kafka cluster.
 - [kafka-console-topicconsumer](./kafka-console-topicconsumer): a command line tool to consume all partition of a topic on your Kafka cluster.
+
+To install all tools, run `go get github.com/Shopify/sarama/tools/...`

tools/kafka-console-partitionconsumer/README.md

@@ -5,7 +5,7 @@ on the standard output.
 
 ### Installation
 
-    go install github.com/Shopify/sarama/tools/kafka-console-partitionconsumer
+    go get github.com/Shopify/sarama/tools/kafka-console-partitionconsumer
 
 ### Usage
 

tools/kafka-console-producer/README.md

@@ -4,7 +4,7 @@ A simple command line tool to produce a single message to Kafka.
 
 ### Installation
 
-    go install github.com/Shopify/sarama/tools/kafka-console-producer
+    go get github.com/Shopify/sarama/tools/kafka-console-producer
 
 
 ### Usage

tools/kafka-console-topicconsumer/README.md

@@ -5,7 +5,7 @@ on the standard output.
 
 ### Installation
 
-    go install github.com/Shopify/sarama/tools/kafka-console-topicconsumer
+    go get github.com/Shopify/sarama/tools/kafka-console-topicconsumer
 
 ### Usage