Added TCP transport port mapping.

README.md

@@ -60,6 +60,7 @@ You can also access:
 By default, the stack exposes the following ports:
 * 5000: Logstash TCP input.
 * 9200: Elasticsearch HTTP
+* 9300: Elasticsearch TCP transport
 * 5601: Kibana
 
 *WARNING*: If you're using *boot2docker*, you must access it via the *boot2docker* IP address instead of *localhost*.

docker-compose.yml

@@ -3,6 +3,7 @@ elasticsearch:
   command: elasticsearch -Des.network.host=0.0.0.0
   ports:
     - "9200:9200"
+    - "9300:9300"
 logstash:
   image: logstash:latest
   command: logstash -f /etc/logstash/conf.d/logstash.conf